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− | |- | + | |- |
− | | | '''Visual Cue''' | + | || '''Visual Cue''' |
− | | | '''Narration''' | + | || '''Narration''' |
− | |- | + | |- |
| || '''Slide 1: Introduction to Flask templates''' | | || '''Slide 1: Introduction to Flask templates''' |
− | || <span style="background-color:transparent;color:#000000;">Welcome to the Spoken Tutorial on</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">'''Introduction to Flask templates'''</span><span style="background-color:transparent;color:#000000;">.</span> | + | || Welcome to the Spoken Tutorial on '''Introduction to Flask templates'''. |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | |- |
− | | style="color:#000000;" | '''Slide 2: Learning Objectives''' | + | || '''Slide 2: Learning Objectives''' |
− | || In this tutorial, we will learn to* <div style="color:#000000;"><span style="background-color:transparent;">Use </span><span style="background-color:transparent;">'''templates'''</span><span style="background-color:transparent;"> </span><span style="background-color:transparent;">in </span><span style="background-color:transparent;">'''Flask'''</span><span style="background-color:transparent;">.</span></div> | + | || In this tutorial, we will learn to |
− | * <div style="color:#000000;"><span style="background-color:transparent;">Use </span><span style="background-color:transparent;">'''variables'''</span><span style="background-color:transparent;"> </span><span style="background-color:transparent;">inside </span><span style="background-color:transparent;">'''templates'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">Gain insight about the </span><span style="background-color:transparent;">'''View'''</span><span style="background-color:transparent;"> part of </span><span style="background-color:transparent;">'''MVC'''</span><span style="background-color:transparent;">.</span></div>
| + | |
| | | |
| + | * Use '''templates''' in '''Flask'''. |
| + | * Use '''variables''' inside '''templates'''. |
| + | * Gain insight about the '''View''' part of '''MVC'''. |
| | | |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | |- |
− | || | + | ||'''Slides 3: System Requirements''' |
| + | || To record this tutorial, I’m using |
| | | |
− | <div style="color:#000000;">'''Slides 3: System Requirements'''</div>
| + | * '''Ubuntu Linux 16.04''' '''OS''' |
− | || <div style="color:#000000;">To record this tutorial, I’m using</div>* <div style="color:#000000;"><span style="background-color:transparent;">'''Ubuntu Linux 16.04'''</span><span style="background-color:transparent;"> </span><span style="background-color:transparent;">'''OS'''</span></div>
| + | * '''Python''' '''3.5.2''' |
− | * <div style="color:#000000;"><span style="background-color:transparent;">'''Python'''</span><span style="background-color:transparent;"> </span><span style="background-color:transparent;">'''3.5.2'''</span></div> | + | * '''Atom text editor 1.22.1 '''and |
− | * <div style="color:#000000;"><span style="background-color:transparent;">'''Atom text editor 1.22.1 '''</span><span style="background-color:transparent;">and</span></div> | + | * '''Firefox Web Browser''' |
− | * <div style="color:#000000;">'''Firefox Web Browser'''</div> | + | |
| | | |
| + | However, you may use any other '''editor''' or '''browser''' of your choice. |
| + | |- |
| + | || '''Slide 5: Pre-requisites''' |
| + | || To follow this tutorial, you should have working knowledge of |
| | | |
| + | * '''Linux commands''' |
| + | * '''Python programming language '''and |
| + | * '''HTML syntax''' |
| | | |
| + | If not, then please go through the corresponding tutorials on this website. |
| + | |- |
| + | || '''Slide 6: MVC Architecture''' |
| + | || Let us begin with the concept of '''MVC architecture'''. |
| | | |
| + | '''MVC paradigm '''separates a '''web app''' into three interlinked components. |
| + | * '''Model''' |
| + | * '''View '''and |
| + | * '''Controller'''. |
| + | |- |
| + | ||'''Slide 7: MVC Architecture (Model)''' |
| + | || |
| + | * '''Model '''is used to represent the '''application data'''. |
| + | * We will talk more about it once we introduce '''database '''related things. |
| | | |
− | <span style="background-color:transparent;color:#000000;">However, you may use any other </span><span style="background-color:transparent;color:#000000;">'''editor'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">or </span><span style="background-color:transparent;color:#000000;">'''browser'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">of your choice.</span>
| + | |- |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | ||'''Slide 8: MVC Architecture (View)''' |
− | || <div style="color:#000000;">'''Slide 5:'''</div> | + | || |
| + | * '''View '''is the presentation layer of '''MVC'''. |
| + | * The appearance of the '''app''' is taken care of by the '''View '''component. |
| + | |- |
| + | ||'''Slide 9: MVC Architecture (Controller)''' |
| + | || |
| + | * '''Controller '''is responsible for directing the '''execution flow''' of the '''app'''. |
| + | * Once the '''requests '''are sent to the '''server,''' |
| + | ** the '''controller '''code processes the '''request''' |
| + | ** and sends back the '''response'''. |
| + | |- |
| + | ||'''Slide 11: MVC Architecture''' |
| + | || |
| + | * The '''templates '''are part of the '''View '''part of '''MVC'''. |
| + | * Loosely speaking, '''templates''' are '''HTML '''pages that can be inherited. |
| + | * We need a '''template engine '''for handling '''templates'''. |
| + | |- |
| + | ||'''Slide 6''': '''Templates''' |
| + | || |
| + | * So far we have simply returned '''HTML''' code from the '''view functions'''. |
| + | * By using '''templates,''' one can return an '''HTML''' file from the '''view functions'''. |
| + | |- |
| + | ||'''Slide 7''': '''Templates''' |
| + | || |
| + | * One '''HTML file''' can inherit '''HTML''' code from another file with the help of '''templates'''. |
| + | * For example, a typical '''website''' has some '''logo''', '''header,''' etc. common in all pages. |
| | | |
− | <div style="color:#000000;">'''Pre-requisites'''</div>
| + | |- |
| + | ||'''Slide 8''': '''Templates''' |
| + | || |
| + | * So one can write a base '''HTML''' '''file''' '''template.''' |
| + | * And other pages can inherit the same base '''HTML''' '''file template'''. |
| | | |
| + | |- |
| + | ||Open a Terminal window |
| + | || Let us open the '''Terminal''' by pressing '''Ctrl''', '''Alt''' and '''T''' keys simultaneously on the keyboard. |
| + | |- |
| + | || [Terminal] |
| | | |
− | | + | Type cd project_flask & Press Enter |
− | || <div style="color:#000000;">To follow this tutorial, you should have working knowledge of</div>* <div style="color:#000000;">'''Linux commands'''</div>
| + | || Now go to the folder '''project underscore flask''' which we created earlier using '''cd''' '''command.''' |
− | | + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">'''Python programming language '''</span><span style="background-color:transparent;">and</span></div>
| + | |
− | * <div style="color:#000000;">'''HTML syntax'''</div>
| + | |
− | | + | |
− | | + | |
− | | + | |
− | | + | |
− | | + | |
− | <div style="color:#000000;">If not, then please go through the corresponding tutorials on this website. </div>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | | style="color:#000000;" | '''Slide 6: MVC Architecture'''
| + | |
− | || <span style="background-color:transparent;color:#000000;">Let us begin with the concept of </span><span style="background-color:transparent;color:#000000;">'''MVC architecture'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">'''MVC paradigm '''</span><span style="background-color:transparent;color:#000000;">separates a </span><span style="background-color:transparent;color:#000000;">'''web app'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">into three interlinked components.</span>
| + | |
− | | + | |
− | | + | |
− | * <div style="color:#000000;">'''Model'''</div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">'''View '''</span><span style="background-color:transparent;">and</span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">'''Controller'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | | + | |
− | | + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | ||
| + | |
− | | + | |
− | <div style="color:#000000;">'''Slide 7: MVC Architecture'''</div>
| + | |
− | | + | |
− | <div style="color:#000000;">'''(Model)'''</div>
| + | |
− | || * <div style="color:#000000;"><span style="background-color:#ffffff;">'''Model '''</span><span style="background-color:#ffffff;">is used to represent the </span><span style="background-color:#ffffff;">'''application data'''</span><span style="background-color:#ffffff;">.</span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:#ffffff;">We will talk more about it once we introduce </span><span style="background-color:#ffffff;">'''database '''</span><span style="background-color:#ffffff;">related things.</span></div>
| + | |
− | | + | |
− | | + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | ||
| + | |
− | | + | |
− | <div style="color:#000000;">'''Slide 8: MVC Architecture'''</div>
| + | |
− | | + | |
− | <div style="color:#000000;">'''(View)'''</div>
| + | |
− | || * <div style="color:#000000;"><span style="background-color:#ffffff;">'''View '''</span><span style="background-color:#ffffff;">is the presentation layer of </span><span style="background-color:#ffffff;">'''MVC'''</span><span style="background-color:#ffffff;">.</span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:#ffffff;">The appearance of the </span><span style="background-color:#ffffff;">'''app'''</span><span style="background-color:#ffffff;"> is taken care of by the </span><span style="background-color:#ffffff;">'''View '''</span><span style="background-color:#ffffff;">component.</span></div>
| + | |
− | | + | |
− | | + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | ||
| + | |
− | | + | |
− | <div style="color:#000000;">'''Slide 9: MVC Architecture'''</div>
| + | |
− | | + | |
− | <div style="color:#000000;">'''(Controller)'''</div>
| + | |
− | || * <div style="color:#000000;"><span style="background-color:transparent;">'''Controller '''</span><span style="background-color:transparent;">is responsible for directing the </span><span style="background-color:transparent;">'''execution flow'''</span><span style="background-color:transparent;"> of the </span><span style="background-color:transparent;">'''app'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">Once the </span><span style="background-color:transparent;">'''requests '''</span><span style="background-color:transparent;">are sent to the </span><span style="background-color:transparent;">'''server,'''</span></div>
| + | |
− | ** <div style="color:#000000;"><span style="background-color:transparent;">the </span><span style="background-color:transparent;">'''controller '''</span><span style="background-color:transparent;">code processes the </span><span style="background-color:transparent;">'''request'''</span></div>
| + | |
− | ** <div style="color:#000000;"><span style="background-color:transparent;">and sends back the </span><span style="background-color:transparent;">'''response'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | | + | |
− | | + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | ||
| + | |
− | | + | |
− | | + | |
− | | + | |
− | <div style="color:#000000;">'''Slide 11: MVC Architecture'''</div>
| + | |
− | || * <div style="color:#000000;"><span style="background-color:transparent;">The </span><span style="background-color:transparent;">'''templates '''</span><span style="background-color:transparent;">are part of the </span><span style="background-color:transparent;">'''View '''</span><span style="background-color:transparent;">part of </span><span style="background-color:transparent;">'''MVC'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">Loosely speaking, </span><span style="background-color:transparent;">'''templates'''</span><span style="background-color:transparent;"> are </span><span style="background-color:transparent;">'''HTML '''</span><span style="background-color:transparent;">pages that can be inherited.</span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">We need a </span><span style="background-color:transparent;">'''template engine '''</span><span style="background-color:transparent;">for handling </span><span style="background-color:transparent;">'''templates'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | | + | |
− | | + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | ||
| + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">'''Slide 6'''</span><span style="background-color:transparent;color:#000000;">: </span><span style="background-color:transparent;color:#000000;">'''Templates'''</span>
| + | |
− | | + | |
− | | + | |
− | | + | |
− | || * <div style="color:#000000;"><span style="background-color:transparent;">So far we have simply returned </span><span style="background-color:transparent;">'''HTML'''</span><span style="background-color:transparent;"> code from the </span><span style="background-color:transparent;">'''view functions'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | | + | |
− | | + | |
− | | + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">By using </span><span style="background-color:transparent;">'''templates,'''</span><span style="background-color:transparent;"> one can return an </span><span style="background-color:transparent;">'''HTML'''</span><span style="background-color:transparent;"> file from the </span><span style="background-color:transparent;">'''view functions'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | | + | |
− | | + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | ||
| + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">'''Slide 7'''</span><span style="background-color:transparent;color:#000000;">: </span><span style="background-color:transparent;color:#000000;">'''Templates'''</span>
| + | |
− | | + | |
− | | + | |
− | | + | |
− | || * <div style="color:#000000;"><span style="background-color:transparent;">One </span><span style="background-color:transparent;">'''HTML file'''</span><span style="background-color:transparent;"> can inherit </span><span style="background-color:transparent;">'''HTML'''</span><span style="background-color:transparent;"> code from another file with the help of </span><span style="background-color:transparent;">'''templates'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">For example, a typical </span><span style="background-color:transparent;">'''website'''</span><span style="background-color:transparent;"> has some </span><span style="background-color:transparent;">'''logo'''</span><span style="background-color:transparent;">, </span><span style="background-color:transparent;">'''header,'''</span><span style="background-color:transparent;"> etc. common in all pages.</span></div>
| + | |
− | | + | |
− | | + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | ||
| + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">'''Slide 8'''</span><span style="background-color:transparent;color:#000000;">: </span><span style="background-color:transparent;color:#000000;">'''Templates'''</span>
| + | |
− | | + | |
− | | + | |
− | | + | |
− | || * <div style="color:#000000;"><span style="background-color:transparent;">So one can write a base </span><span style="background-color:transparent;">'''HTML'''</span><span style="background-color:transparent;"> </span><span style="background-color:transparent;">'''file'''</span><span style="background-color:transparent;"> </span><span style="background-color:transparent;">'''template.'''</span><span style="background-color:transparent;"> </span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">And other pages can inherit the same base </span><span style="background-color:transparent;">'''HTML'''</span><span style="background-color:transparent;"> </span><span style="background-color:transparent;">'''file template'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | | + | |
− | | + | |
− | |- style="background-color:#ffffff;border-top:1pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-top:0.176cm;padding-bottom:0.176cm;padding-left:0.095cm;padding-right:0.176cm;"
| + | |
− | ||
| + | |
− | | + | |
− | <div style="color:#000000;">Open a Terminal window</div>
| + | |
− | | + | |
− | | + | |
− | | + | |
− | || <span style="background-color:transparent;color:#000000;">Let us open the </span><span style="background-color:transparent;color:#000000;">'''Terminal'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">by pressing </span><span style="background-color:transparent;color:#000000;">'''Ctrl'''</span><span style="background-color:transparent;color:#000000;">, </span><span style="background-color:transparent;color:#000000;">'''Alt'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">and </span><span style="background-color:transparent;color:#000000;">'''T'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">keys simultaneously on the keyboard.</span>
| + | |
− | |- style="background-color:#ffffff;border:0.5pt solid #000000;padding:0.106cm;"
| + | |
− | || <div style="color:#000000;">[Terminal]</div>
| + | |
− | | + | |
− | <div style="color:#000000;">Type cd project_flask & Press Enter</div>
| + | |
− | || <span style="background-color:transparent;color:#000000;">Now go to the folder </span><span style="background-color:transparent;color:#000000;">'''project underscore flask'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">which we created earlier using </span><span style="background-color:transparent;color:#000000;">'''cd'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">'''command.'''</span> | + | |
| |- | | |- |
− | | style="border-top:0.5pt solid #000000;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.176cm;" | <div style="color:#000000;">[Terminal]</div> | + | || [Terminal] |
| | | |
| + | $ . flask_venv/bin/activate [Enter] |
| + | || And activate our '''virtualenv'''. |
| | | |
− | <div style="color:#000000;">$ . flask_venv/bin/activate</div>
| + | Type '''dot space flask_venv slash bin slash activate''' |
| | | |
− | | + | And press '''Enter'''. |
− | <div style="color:#000000;">[Enter]</div>
| + | |
− | | style="border-top:0.5pt solid #000000;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.176cm;" | <span style="background-color:transparent;color:#000000;">And activate our </span><span style="background-color:transparent;color:#000000;">'''virtualenv'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | | + | |
− | | + | |
− | <div style="color:#000000;">Type</div>
| + | |
− | | + | |
− | <div style="color:#000000;">'''dot space flask_venv slash bin slash activate'''</div>
| + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">And press </span><span style="background-color:transparent;color:#000000;">'''Enter'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
| |- | | |- |
| | style="border-top:1pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-top:0.176cm;padding-bottom:0.176cm;padding-left:0.095cm;padding-right:0.176cm;color:#000000;" | Only narration | | | style="border-top:1pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-top:0.176cm;padding-bottom:0.176cm;padding-left:0.095cm;padding-right:0.176cm;color:#000000;" | Only narration |
− | | style="border-top:1pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-top:0.176cm;padding-bottom:0.176cm;padding-left:0.095cm;padding-right:0.176cm;" | <span style="background-color:transparent;color:#000000;">Here onwards, please remember to press the </span><span style="background-color:transparent;color:#000000;">'''Enter'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">key after typing each </span><span style="background-color:transparent;color:#000000;">'''command'''</span><span style="background-color:transparent;color:#000000;">.</span> | + | || Here onwards, please remember to press the '''Enter''' key after typing each '''command'''. |
| |- | | |- |
− | | style="border-top:0.5pt solid #000000;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.176cm;" | <div style="color:#000000;">[Terminal]</div> | + | || [Terminal] |
| + | Type $ atom hello_flask.py |
| + | || Let’s open the '''hello_flask.py''' file which we created earlier in this series, in any '''text editor'''. |
| + | |- |
| + | || [Text Editor] hello_flask.py |
| | | |
− | <div style="color:#000000;">Type</div>
| + | Highlight HTML part in my_form(). |
| + | || Observe that the '''my_form() function''' returns '''raw HTML'''. |
| | | |
− | <div style="color:#000000;">$ atom hello_flask.py</div>
| + | Now we will demonstrate how we can avoid returning raw '''HTML''' '''code'''. |
− | | style="border-top:0.5pt solid #000000;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.176cm;" | <span style="background-color:transparent;color:#000000;">Let’s open the </span><span style="background-color:transparent;color:#000000;">'''hello_flask.py'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file which we created earlier in this series, in any </span><span style="background-color:transparent;color:#000000;">'''text editor'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Text Editor] hello_flask.py</div>
| + | |
| | | |
| + | For that we have to create our '''HTML template''' files in a separate folder called '''templates'''. |
| + | |- |
| + | || [Terminal] |
| | | |
− | <div style="color:#000000;">Highlight HTML part in my_form().</div>
| + | mkdir templates [Enter] |
− | || <span style="background-color:transparent;color:#000000;">Observe that the </span><span style="background-color:transparent;color:#000000;">'''my_form() function'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">returns </span><span style="background-color:transparent;color:#000000;">'''raw HTML'''</span><span style="background-color:transparent;color:#000000;">.</span> | + | || Switch to the '''terminal. ''' |
| | | |
| + | And let’s create a '''folder''' named '''templates.''' |
| | | |
− | <span style="background-color:transparent;color:#000000;">Now we will demonstrate how we can avoid returning raw </span><span style="background-color:transparent;color:#000000;">'''HTML'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">'''code'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | Type '''mkdir <space> templates'''. |
− | | + | |- |
− | | + | || |
− | <span style="background-color:transparent;color:#000000;">For that we have to create our </span><span style="background-color:transparent;color:#000000;">'''HTML template'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">files in a separate folder called </span><span style="background-color:transparent;color:#000000;">'''templates'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Terminal]</div>
| + | |
− | | + | |
− | | + | |
− | <div style="color:#000000;">mkdir templates [Enter]</div>
| + | |
− | || <span style="background-color:transparent;color:#000000;">Switch to the </span><span style="background-color:transparent;color:#000000;">'''terminal. '''</span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">And let’s create a </span><span style="background-color:transparent;color:#000000;">'''folder'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">named </span><span style="background-color:transparent;color:#000000;">'''templates.'''</span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">Type </span><span style="background-color:transparent;color:#000000;">'''mkdir <space> templates'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | |
− | || | + | |
| [Editor: sample_template.html] <br> | | [Editor: sample_template.html] <br> |
| Type | | Type |
Line 223: |
Line 148: |
| <body><br> | | <body><br> |
| <nowiki> | | <nowiki> |
− | <h1>The firstname value is Spoken</h1>
| + | <h1>The firstname value is Spoken</h1> |
| </nowiki><br> | | </nowiki><br> |
| </body> | | </body> |
Line 229: |
Line 154: |
| </html> | | </html> |
| | | |
| + | || Let us write a simple '''HTML''' code to print the first name in a new file '''sample_template.html ''' |
| | | |
− | || <span style="background-color:transparent;color:#000000;">Let us write a simple </span><span style="background-color:transparent;color:#000000;">'''HTML'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">code to print the first name in a new file </span><span style="background-color:transparent;color:#000000;">'''sample_template.html '''</span>
| + | Type the code as shown here. |
| | | |
| + | |- |
| + | || Press Ctrl + S |
| + | || And save the file. |
| + | |- |
| + | || Only Narration |
| + | || Now let us render this '''HTML''' file via '''python flask app'''. |
| | | |
− | <div style="color:#000000;">Type the code as shown here.</div>
| + | For this demonstration, let us define a new '''route''' in our '''hello_flask''' file. |
| + | |- |
| + | || Switch to '''hello_flask.py''' in the '''text editor'''. |
| + | || Switch to the file '''hello_flask.py''' in the '''text editor'''. |
| + | |- |
| + | || [Editor: hello_flask.py] |
| | | |
| + | @app.route('/template') |
| | | |
| + | def template_ex(): |
| | | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | return render_template('sample_template.html') |
− | | style="color:#000000;" | Press Ctrl + S | + | || In the '''hello_flask.py''' file, before the last '''if condition''', type the code as shown here. |
− | | style="color:#000000;" | And save the file.
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | | style="color:#000000;" | Only Narration
| + | |
− | || <span style="background-color:transparent;color:#000000;">Now let us render this </span><span style="background-color:transparent;color:#000000;">'''HTML'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file via </span><span style="background-color:transparent;color:#000000;">'''python flask app'''</span><span style="background-color:transparent;color:#000000;">. </span>
| + | |
| | | |
| + | |- |
| + | || Highlight: render_template('sample_template.html') |
| + | || Inside this '''route''' we have used the '''function render_template''' provided by '''Flask'''. |
| | | |
− | <span style="background-color:transparent;color:#000000;">For this demonstration, let us define a new </span><span style="background-color:transparent;color:#000000;">'''route'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">in </span><span style="background-color:transparent;color:#000000;">our </span><span style="background-color:transparent;color:#000000;">'''hello_flask'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file.</span>
| + | This '''function''' is used to render an '''HTML''' '''template file'''. |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <span style="background-color:transparent;color:#000000;">Switch to </span><span style="background-color:transparent;color:#000000;">'''hello_flask.py'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">in the </span><span style="background-color:transparent;color:#000000;">'''text editor'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | || <span style="background-color:transparent;color:#000000;">Switch to the file </span><span style="background-color:transparent;color:#000000;">'''hello_flask.py'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">in the </span><span style="background-color:transparent;color:#000000;">'''text editor'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Editor: hello_flask.py]</div>
| + | |
| | | |
| + | Here we pass '''sample_template.html''' as an '''argument''' to the '''render_template function'''. |
| | | |
− | <div style="color:#000000;">@app.route('/template')</div>
| + | So, '''Flask''' will look for the file '''sample_template dot html''' inside the '''templates folder'''. |
| + | |- |
| + | || [Text Editor] Add , render_template |
| | | |
− | <div style="color:#000000;">def template_ex():</div>
| + | from flask import Flask, request, render_template |
| + | || In the 1st line, we will import the '''method render_template.''' |
| + | |- |
| + | || Press Ctrl + S keys |
| + | || And then save the file |
| + | |- |
| + | || [Terminal] |
| + | || Now switch to the '''terminal'''. |
| + | |- |
| + | || [Terminal] |
| + | Type |
| | | |
− | <span style="background-color:transparent;color:#000000;">return render_template('sample_template.html')</span>
| + | $ export FLASK_APP=hello_flask.py |
− | || <span style="background-color:transparent;color:#000000;">In the </span><span style="background-color:transparent;color:#000000;">'''hello_flask.py'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file, before the last</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">'''if condition'''</span><span style="background-color:transparent;color:#000000;">, type the code as shown here.</span> | + | || And type '''export <space> FLASK_APP <equal to > hello underscore flask dot py''' |
| + | |- |
| + | || [Terminal] |
| | | |
| + | Type $ python3 -m flask run [Enter] |
| + | || Now run the '''server.''' |
| + | |- |
| + | || [Firefox] |
| + | Type http://127.0.0.1:5000/template |
| | | |
| + | And press Enter. |
| + | || Then, open a '''web browser''' and in the '''address bar''', type |
| | | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | '''http://127.0.0.1:5000/template''' |
− | | style="color:#000000;" | Highlight: render_template('sample_template.html')
| + | |
− | || <span style="background-color:transparent;color:#000000;">Inside this </span><span style="background-color:transparent;color:#000000;">'''route'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">we have used the </span><span style="background-color:transparent;color:#000000;">'''function render_template'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">provided by </span><span style="background-color:transparent;color:#000000;">'''Flask'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
| | | |
| + | And press '''Enter'''. |
| + | |- |
| + | || [Firefox] Highlight the text. |
| + | || We got the output of the '''HTML page'''. |
| | | |
− | <span style="background-color:transparent;color:#000000;">This </span><span style="background-color:transparent;color:#000000;">'''function'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">is used to render an </span><span style="background-color:transparent;color:#000000;">'''HTML'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">'''template file'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | So we have rendered the '''HTML code''' without hardcoding it inside the '''python''' file. |
| + | |- |
| + | || Only narration |
| + | || Now switch to the '''hello_flask.py''' file |
| | | |
| + | We can pass the '''variables''' as a parameter to the '''render_template method.''' |
| | | |
− | <span style="background-color:transparent;color:#000000;">Here we pass </span><span style="background-color:transparent;color:#000000;">'''sample_template.html'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">as an </span><span style="background-color:transparent;color:#000000;">'''argument'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">to the </span><span style="background-color:transparent;color:#000000;">'''render_template function'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | Let us see how we can do this. |
| + | |- |
| + | || def template_ex(): |
| | | |
| + | fname = 'Tutorial' |
| | | |
− | <span style="background-color:transparent;color:#000000;">So, </span><span style="background-color:transparent;color:#000000;">'''Flask'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">will look for the file </span><span style="background-color:transparent;color:#000000;">'''sample_template dot html'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">inside the </span><span style="background-color:transparent;color:#000000;">'''templates folder'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | return render_template('sample_template.html', firstname = fname) |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | || Update the '''template_ex method''' as shown here. |
− | || <div style="color:#000000;">[Text Editor] Add , render_template</div> | + | |- |
| + | || [Text Editor] highlight fname = ‘Tutorial’ |
| + | || I have declared a '''variable''' called '''fname''' here and assigned the value '''Tutorial''' to it. |
| + | |- |
| + | || [Text Editor] Highlight |
| | | |
| + | return render_template('sample_template.html', firstname = fname) |
| + | || Then I have passed this '''variable fname''' to the '''render_template''' '''method'''. |
| | | |
− | <div style="color:#000000;">from flask import Flask, request, render_template</div>
| + | Now the value of the '''variable fname''' can be accessed via the '''variable firstname''' in the '''HTML''' file. |
− | || <span style="background-color:transparent;color:#000000;">In the 1st line, we will import the </span><span style="background-color:transparent;color:#000000;">'''method render_template.'''</span>
| + | |- |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | || Press Ctrl + S keys |
− | | style="color:#000000;" | Press Ctrl + S keys | + | || Let’s save the file. |
− | | style="color:#000000;" | And then save the file | + | |- |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | || [Text Editor] |
− | | style="color:#000000;" | [Terminal] | + | In sample_template.html |
− | || <span style="background-color:transparent;color:#000000;">Now switch to the </span><span style="background-color:transparent;color:#000000;">'''terminal'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Terminal]</div>
| + | |
| | | |
− | <div style="color:#000000;">Type</div>
| + | Highlight Spoken |
| + | || And switch to '''sample_template.html''' file. |
| | | |
− | <div style="color:#000000;">$ export FLASK_APP=hello_flask.py</div>
| + | Here, we have explicitly mentioned '''Spoken '''as '''firstname'''. |
− | || <span style="background-color:transparent;color:#000000;">And type </span><span style="background-color:transparent;color:#000000;">'''export <space> FLASK_APP <equal to > hello underscore flask dot py'''</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Terminal]</div>
| + | |
| | | |
− | <div style="color:#000000;">Type $ python3 -m flask run [Enter]</div>
| + | We will use '''jinja''' to interact the '''HTML''' file with the '''python''' file. |
− | || <span style="background-color:transparent;color:#000000;">Now run the </span><span style="background-color:transparent;color:#000000;">'''server.'''</span>
| + | |- |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | || '''Slide 9''': '''Jinja''' |
− | || <div style="color:#000000;">[Firefox]</div>
| + | || |
− | | + | * '''Jinja''' is a powerful '''templating''' '''language'''. |
− | | + | * It allows generating '''HTML''' on the fly based on the '''request'''. |
− | <span style="background-color:transparent;color:#000000;">Type </span>[http://127.0.0.1:5000/ http://127.0.0.1:5000/]<span style="background-color:transparent;color:#000000;">template</span>
| + | * It supports '''control structures''' such as '''if-statements''' and '''for-loops'''. |
− | | + | * Most importantly, it enables '''inheritance''' of '''HTML''' code. |
− | | + | |
− | <div style="color:#000000;">And press Enter.</div>
| + | |
− | || <span style="background-color:transparent;color:#000000;">Then, open a </span><span style="background-color:transparent;color:#000000;">'''web browser'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">and in the </span><span style="background-color:transparent;color:#000000;">'''address bar'''</span><span style="background-color:transparent;color:#000000;">, type </span>
| + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">'''http://127.0.0.1:5000/template'''</span><span style="background-color:transparent;color:#000000;"> </span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">And press </span><span style="background-color:transparent;color:#000000;">'''Enter'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | | style="color:#000000;" | [Firefox] Highlight the text.
| + | |
− | || <span style="background-color:transparent;color:#000000;">We got the output of the </span><span style="background-color:transparent;color:#000000;">'''HTML page'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">So we have rendered the </span><span style="background-color:transparent;color:#000000;">'''HTML code'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">without hardcoding it inside the </span><span style="background-color:transparent;color:#000000;">'''python'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | | style="color:#000000;" | Only narration
| + | |
− | || <span style="background-color:transparent;color:#000000;">Now switch to the </span><span style="background-color:transparent;color:#000000;">'''hello_flask.py'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file</span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">We can pass the </span><span style="background-color:transparent;color:#000000;">'''variables'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">as a parameter to the </span><span style="background-color:transparent;color:#000000;">'''render_template method.'''</span>
| + | |
− | | + | |
− | | + | |
− | <div style="color:#000000;">Let us see how we can do this.</div>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">def template_ex():</div>
| + | |
− | | + | |
− | <div style="color:#000000;">fname = 'Tutorial'</div>
| + | |
− | | + | |
− | <div style="color:#000000;">return render_template('sample_template.html', firstname = fname)</div>
| + | |
− | || <span style="background-color:transparent;color:#000000;">Update the </span><span style="background-color:transparent;color:#000000;">'''template_ex method'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">as shown here.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | | style="color:#000000;" | [Text Editor] highlight fname = ‘Tutorial’
| + | |
− | || <span style="background-color:transparent;color:#000000;">I have declared a </span><span style="background-color:transparent;color:#000000;">'''variable'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">called </span><span style="background-color:transparent;color:#000000;">'''fname'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">here and assigned the value </span><span style="background-color:transparent;color:#000000;">'''Tutorial'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">to it.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Text Editor] Highlight</div>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">return render_template('sample_template.html', firstname = fname)</span>
| + | |
− | || <span style="background-color:transparent;color:#000000;">Then I have passed this </span><span style="background-color:transparent;color:#000000;">'''variable fname'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">to the </span><span style="background-color:transparent;color:#000000;">'''render_template'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">'''method'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">Now the value of the </span><span style="background-color:transparent;color:#000000;">'''variable fname'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">can be accessed via the </span><span style="background-color:transparent;color:#000000;">'''variable firstname'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">in the </span><span style="background-color:transparent;color:#000000;">'''HTML'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | | style="color:#000000;" | Press Ctrl + S keys
| + | |
− | | style="color:#000000;" | Let’s save the file.
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Text Editor]</div>
| + | |
− | | + | |
− | <div style="color:#000000;">In sample_template.html</div>
| + | |
− | | + | |
− | | + | |
− | <div style="color:#000000;">Highlight Spoken</div>
| + | |
− | || <span style="background-color:transparent;color:#000000;">And switch to </span><span style="background-color:transparent;color:#000000;">'''sample_template.html'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file.</span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">Here, we have explicitly mentioned </span><span style="background-color:transparent;color:#000000;">'''Spoken '''</span><span style="background-color:transparent;color:#000000;">as </span><span style="background-color:transparent;color:#000000;">'''firstname'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">We will use </span><span style="background-color:transparent;color:#000000;">'''jinja'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">to interact the </span><span style="background-color:transparent;color:#000000;">'''HTML'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file with the </span><span style="background-color:transparent;color:#000000;">'''python'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | |
− | || <span style="background-color:transparent;color:#000000;">'''Slide 9'''</span><span style="background-color:transparent;color:#000000;">: </span><span style="background-color:transparent;color:#000000;">'''Jinja'''</span> | + | |
− | || * <div style="color:#000000;"><span style="background-color:transparent;">'''Jinja'''</span><span style="background-color:transparent;"> is a powerful </span><span style="background-color:transparent;">'''templating'''</span><span style="background-color:transparent;"> </span><span style="background-color:transparent;">'''language'''</span><span style="background-color:transparent;">.</span></div> | + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">It allows generating </span><span style="background-color:transparent;">'''HTML'''</span><span style="background-color:transparent;"> on the fly based on the </span><span style="background-color:transparent;">'''request'''</span><span style="background-color:transparent;">.</span></div> | + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">It supports </span><span style="background-color:transparent;">'''control structures'''</span><span style="background-color:transparent;"> such as </span><span style="background-color:transparent;">'''if-</span><span style="background-color:transparent;">statements'''</span><span style="background-color:transparent;"> and </span><span style="background-color:transparent;">'''for-loops'''</span><span style="background-color:transparent;">.</span></div> | + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">Most importantly, it enables </span><span style="background-color:transparent;">'''inheritance'''</span><span style="background-color:transparent;"> of </span><span style="background-color:transparent;">'''HTML'''</span><span style="background-color:transparent;"> code.</span></div> | + | |
− | | + | |
− | | + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | ||
| + | |
− | | + | |
− | <div style="color:#000000;">Modify the body as</div>
| + | |
| | | |
| + | |- |
| + | ||Modify the body as |
| | | |
| <nowiki><h1>The firstname value is {{ firstname }}</h1></nowiki> | | <nowiki><h1>The firstname value is {{ firstname }}</h1></nowiki> |
| | | |
| + | ('''within double curly braces firstname''') |
| + | || Switch to '''sample_template.html''' file. |
| | | |
− | <span style="background-color:transparent;color:#000000;">(</span><span style="background-color:transparent;color:#000000;">'''within double curly braces firstname'''</span><span style="background-color:transparent;color:#000000;">)</span>
| + | To access a '''variable''' in '''Jinja,''' we have to write it within '''double''' '''curly braces'''. |
− | || <span style="background-color:transparent;color:#000000;">Switch to </span><span style="background-color:transparent;color:#000000;">'''sample_template.html'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file.</span>
| + | |
| | | |
| + | So replace the word '''Spoken '''with '''within-double curly braces, firstname.''' |
| + | |- |
| + | || Press Ctrl + S |
| + | || Save the file. |
| + | |- |
| + | || [Terminal] |
| | | |
− | <span style="background-color:transparent;color:#000000;">To access a </span><span style="background-color:transparent;color:#000000;">'''variable'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">in </span><span style="background-color:transparent;color:#000000;">'''Jinja,'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">we have to write it within </span><span style="background-color:transparent;color:#000000;">'''double'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">'''curly braces'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | Type $ python3 -m flask run |
| + | [Enter] |
| + | || And switch to the '''terminal'''. |
| | | |
| + | Stop the running '''server '''and '''start''' the '''server''' once again. |
| + | |- |
| + | || Type http://127.0.0.1:5000 |
| | | |
− | <span style="background-color:transparent;color:#000000;">So replace the word </span><span style="background-color:transparent;color:#000000;">'''Spoken '''</span><span style="background-color:transparent;color:#000000;">with </span><span style="background-color:transparent;color:#000000;">'''within-double curly braces, firstname.'''</span>
| + | And press Enter. |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | | style="color:#000000;" | Press Ctrl + S
| + | |
− | | style="color:#000000;" | Save the file.
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Terminal]</div>
| + | |
| | | |
− | <div style="color:#000000;">Type</div>
| + | Highlight '''Tutorial'''. |
| + | || Then switch to the '''browser''' and refresh the page. |
| | | |
| + | Observe that we get '''Tutorial'''. |
| | | |
− | <div style="color:#000000;">$ python3 -m flask run</div>
| + | That means we have successfully passed the '''variable''' from '''python''' to '''HTML'''. |
| + | |- |
| + | || [Text Editor] hello_flask.py |
| | | |
− | <div style="color:#000000;">[Enter]</div>
| + | def my_form(): |
− | || <span style="background-color:transparent;color:#000000;">And switch to the </span><span style="background-color:transparent;color:#000000;">'''terminal'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
| | | |
| + | if request.method == 'POST': |
| | | |
− | <span style="background-color:transparent;color:#000000;">Stop the running </span><span style="background-color:transparent;color:#000000;">'''server '''</span><span style="background-color:transparent;color:#000000;">and </span><span style="background-color:transparent;color:#000000;">'''start'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">the </span><span style="background-color:transparent;color:#000000;">'''server'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">once again, by typing this </span><span style="background-color:transparent;color:#000000;">'''command'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | firstname = request.form.get('firstname') |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">Type </div>
| + | |
| | | |
− | [http://127.0.0.1:5000/ http://127.0.0.1:5000/template]
| + | lastname = request.form.get('lastname') |
| | | |
− | <div style="color:#000000;">And press Enter.</div>
| + | return render_template('form1.html', fname=firstname, lname=lastname) |
| | | |
| + | return render_template('form2.html') |
| + | || Once again, switch to the '''hello_flask.py''' file and update the '''form''' '''route''' as shown. |
| + | |- |
| + | || Press '''Ctrl + S''' |
| + | || Save this file. |
| + | |- |
| + | || Only narration |
| + | || Now we have to create two '''HTML''' files '''form1.html''' and '''form2.html'''. |
| + | |- |
| + | || Terminal |
| | | |
− | <span style="background-color:transparent;color:#000000;">Highlight </span><span style="background-color:transparent;color:#000000;">'''Tutorial'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | Press Ctrl + C |
− | || <span style="background-color:transparent;color:#000000;">Then switch to the </span><span style="background-color:transparent;color:#000000;">'''browser'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">and refresh the page.</span> | + | || Switch to the '''terminal''' and stop the '''server'''. |
| + | |- |
| + | || [Terminal] |
| + | atom templates/form1.html templates/form2.html [Enter] |
| + | || Now open '''form1.html '''and '''form2.html''' in a '''text editor'''. |
| | | |
− | | + | |- |
− | <span style="background-color:transparent;color:#000000;">Observe that, we get </span><span style="background-color:transparent;color:#000000;">'''Tutorial'''</span><span style="background-color:transparent;color:#000000;">. </span>
| + | || [Text Editor] Show form1.html |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">That means we have successfully passed the </span><span style="background-color:transparent;color:#000000;">'''variable'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">from </span><span style="background-color:transparent;color:#000000;">'''python'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">to </span><span style="background-color:transparent;color:#000000;">'''HTML'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | |
− | || <div style="color:#000000;">[Text Editor] hello_flask.py</div>
| + | |
− | | + | |
− | | + | |
− | <div style="color:#000000;"> def my_form():</div>
| + | |
− | | + | |
− | <div style="color:#000000;"> if request.method == 'POST':</div>
| + | |
− | | + | |
− | <div style="color:#000000;"> firstname = request.form.get('firstname')</div>
| + | |
− | | + | |
− | <div style="color:#000000;"> lastname = request.form.get('lastname')</div>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">return render_template('form1.html', fname=firstname, lname=lastname)</span>
| + | |
− | | + | |
− | | + | |
− | <div style="color:#000000;"> return render_template('form2.html')</div>
| + | |
− | || <span style="background-color:transparent;color:#000000;">Once again, switch to the </span><span style="background-color:transparent;color:#000000;">'''hello_flask.py'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">file and update the </span><span style="background-color:transparent;color:#000000;">'''form'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">'''route'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">as shown.</span>
| + | |
− | | + | |
− | | + | |
− | | + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <span style="background-color:transparent;color:#000000;">Press </span><span style="background-color:transparent;color:#000000;">'''Ctrl + S'''</span>
| + | |
− | | style="color:#000000;" | Save this file.
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | | style="color:#000000;" | Only narration
| + | |
− | || <span style="background-color:transparent;color:#000000;">Now we have to create two </span><span style="background-color:transparent;color:#000000;">'''HTML'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">files </span><span style="background-color:transparent;color:#000000;">'''form1.html'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">and </span><span style="background-color:transparent;color:#000000;">'''form2.html'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">Terminal</div>
| + | |
− | | + | |
− | <div style="color:#000000;">Press Ctrl + C</div>
| + | |
− | || <span style="background-color:transparent;color:#000000;">Switch to the terminal and stop the </span><span style="background-color:transparent;color:#000000;">'''server'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Terminal]</div>
| + | |
− | | + | |
− | | + | |
− | <div style="color:#000000;">atom templates/form1.html templates/form2.html [Enter]</div>
| + | |
− | || <span style="background-color:transparent;color:#000000;">Now open </span><span style="background-color:transparent;color:#000000;">'''form1.html '''</span><span style="background-color:transparent;color:#000000;">and </span><span style="background-color:transparent;color:#000000;">'''form2.html'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">in a </span><span style="background-color:transparent;color:#000000;">'''text editor'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | | + | |
− | | + | |
− | | + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Text Editor] Show form1.html</div> | + | |
| | | |
| <!DOCTYPE html> | | <!DOCTYPE html> |
Line 484: |
Line 357: |
| </html> | | </html> |
| | | |
− | || <span style="background-color:transparent;color:#000000;">In </span><span style="background-color:transparent;color:#000000;">'''form1.html,'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">add the following piece of code.</span> | + | || In '''form1.html,''' add the following piece of code. |
| | | |
| + | This code will simply display the '''firstname''' and '''lastname'''. |
| + | |- |
| + | || Press '''Ctrl + S''' |
| + | || Save the file. |
| + | |- |
| + | || [Text Editor] Show form2.html |
| | | |
− | <span style="background-color:transparent;color:#000000;">This code will simply display the </span><span style="background-color:transparent;color:#000000;">'''firstname'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">and </span><span style="background-color:transparent;color:#000000;">'''lastname'''</span><span style="background-color:transparent;color:#000000;">.</span> | + | <!DOCTYPE html> |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <span style="background-color:transparent;color:#000000;">Press </span><span style="background-color:transparent;color:#000000;">'''Ctrl + S'''</span>
| + | |
− | | style="color:#000000;" | Save the file.
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Text Editor] Show form2.html</div>
| + | |
| | | |
| + | <html> |
| | | |
− | <span style="background-color:#ffffff;color:#000000;"><!DOCTYPE html><html><head></span><span style="background-color:#ffffff;color:#000000;"> </span><span style="background-color:#ffffff;color:#000000;"><title>Hello</title></head><body></span><span style="background-color:#ffffff;color:#000000;"> </span><span style="background-color:#ffffff;color:#000000;"><form method="POST"></span><span style="background-color:#ffffff;color:#000000;"> </span><span style="background-color:#ffffff;color:#000000;">Firstname: <input type="text" name="firstname"><br></span><span style="background-color:#ffffff;color:#000000;"> </span><span style="background-color:#ffffff;color:#000000;">Lastname: <input type="text" name="lastname"><br></span><span style="background-color:#ffffff;color:#000000;"> </span><span style="background-color:#ffffff;color:#000000;"><input type="submit" value="Submit"><br></span><span style="background-color:#ffffff;color:#000000;"> </span><span style="background-color:#ffffff;color:#000000;"> </span><span style="background-color:#ffffff;color:#000000;"></form></body></html></span>
| + | <head> |
− | || <span style="background-color:transparent;color:#000000;">In </span><span style="background-color:transparent;color:#000000;">'''form2.html'''</span><span style="background-color:transparent;color:#000000;">, add the following piece of code.</span>
| + | <br> |
| + | <nowiki> <title> Hello </title> </nowiki> |
| + | <br> |
| + | </head> |
| | | |
| + | <body> |
| | | |
− | <span style="background-color:transparent;color:#000000;">This code will display a form to receive </span><span style="background-color:transparent;color:#000000;">'''firstname'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">and </span><span style="background-color:transparent;color:#000000;">'''lastname'''</span><span style="background-color:transparent;color:#000000;">.</span> | + | <form method="POST"> |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <span style="background-color:transparent;color:#000000;">Press </span><span style="background-color:transparent;color:#000000;">'''Ctrl + S'''</span>
| + | |
− | | style="color:#000000;" | Again, save the file.
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Terminal]</div>
| + | |
| | | |
| + | <nowiki> Firstname: <input type="text" name="firstname"><br></nowiki> |
| | | |
− | <div style="color:#000000;">Type python3 -m flask run</div> | + | <nowiki> Lastname: <input type="text" name="lastname"><br></nowiki> |
− | || <span style="background-color:transparent;color:#000000;">Switch to the </span><span style="background-color:transparent;color:#000000;">'''terminal'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
| | | |
| + | <nowiki> <input type="submit" value="Submit"><br></nowiki> |
| | | |
− | <span style="background-color:transparent;color:#000000;">And run the </span><span style="background-color:transparent;color:#000000;">'''server '''</span><span style="background-color:transparent;color:#000000;">again.</span>
| + | </form> |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <div style="color:#000000;">[Browser]</div>
| + | |
| | | |
− | <div style="color:#000000;">Type </div> | + | </body> |
| + | </html> |
| + | || In '''form2.html''', add the following piece of code. |
| | | |
− | [http://127.0.0.1:5000/ http://127.0.0.1:5000/form]
| + | This code will display a form to receive '''firstname''' and '''lastname'''. |
| + | |- |
| + | || Press '''Ctrl + S''' |
| + | || Save the file. |
| + | |- |
| + | || [Terminal] |
| + | Type python3 -m flask run |
| + | || Switch to the '''terminal'''. |
| | | |
− | <div style="color:#000000;">And press Enter.</div>
| + | And run the '''server '''again. |
− | || <span style="background-color:transparent;color:#000000;">Then switch to the </span><span style="background-color:transparent;color:#000000;">'''browser'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |- |
| + | || [Browser] |
| | | |
| + | Type http://127.0.0.1:5000/form |
| | | |
− | <span style="background-color:transparent;color:#000000;">And in the </span><span style="background-color:transparent;color:#000000;">'''address bar'''</span><span style="background-color:transparent;color:#000000;">, replace </span><span style="background-color:transparent;color:#000000;">'''template'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">with </span><span style="background-color:transparent;color:#000000;">'''form'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">and press </span><span style="background-color:transparent;color:#000000;">'''Enter'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | And press Enter. |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | || Then switch to the '''browser'''. |
− | || <div style="color:#000000;">[Browser]</div>
| + | |
| | | |
− | <div style="color:#000000;">Firstname : Spoken</div>
| + | In the '''address bar''', replace '''template''' with '''form''' and press '''Enter'''. |
| + | |- |
| + | || [Browser] |
| + | Firstname : Spoken |
| | | |
| + | Lastname: Tutorial [Submit] |
| | | |
− | <div style="color:#000000;">Lastname: Tutorial [Submit]</div>
| + | || Enter the '''first name''' as '''Spoken.''' |
| | | |
| + | And '''last name''' as '''Tutorial.''' |
| | | |
| + | Then click on the '''Submit '''button. |
| + | |- |
| + | || [Browser] Highlight the text on screen. |
| + | || We got the output as desired. |
| + | |- |
| + | || [Terminal] |
| | | |
− | || <span style="background-color:transparent;color:#000000;">Enter the </span><span style="background-color:transparent;color:#000000;">'''first name'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">as </span><span style="background-color:transparent;color:#000000;">'''Spoken.'''</span>
| + | Press '''Ctrl + C''' |
| | | |
| + | Type '''deactivate''' and press '''Enter''' |
| + | || Switch back to the '''terminal'''. |
| | | |
− | <span style="background-color:transparent;color:#000000;">And </span><span style="background-color:transparent;color:#000000;">'''last name'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">as </span><span style="background-color:transparent;color:#000000;">'''Tutorial.'''</span>
| + | Let’s stop the '''server'''. |
| | | |
| + | And '''deactivate''' the '''virtual environment'''. |
| + | |- |
| + | || Only narration |
| + | || This brings us to the end of this tutorial. |
| | | |
− | <span style="background-color:transparent;color:#000000;">Then click on the </span><span style="background-color:transparent;color:#000000;">'''Submit '''</span><span style="background-color:transparent;color:#000000;">button.</span>
| + | Let us summarise. |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | |- |
− | | style="color:#000000;" | [Browser] Highlight the text on screen.
| + | || Slide 8: '''Summary''' |
− | | style="color:#000000;" | We got the output as desired.
| + | || In this tutorial, we learnt about- |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | |
− | || <div style="color:#000000;">[Terminal]</div>
| + | |
| | | |
| + | * '''Templating''' in '''Flask''' to write clean code. |
| + | * Using '''variables''' in the '''jinja2 templating language.''' |
| + | * The '''View''' part of '''MVC'''. |
| | | |
− | <span style="background-color:transparent;color:#000000;">Press </span><span style="background-color:transparent;color:#000000;">'''Ctrl + C'''</span>
| + | |- |
− | | + | || Slide: About Spoken Tutorial project |
− | | + | || The video at the following link summarises the Spoken Tutorial project. |
− | <span style="background-color:transparent;color:#000000;">Type </span><span style="background-color:transparent;color:#000000;">'''deactivate'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">and press </span><span style="background-color:transparent;color:#000000;">'''Enter'''</span>
| + | |
− | || <span style="background-color:transparent;color:#000000;">Switch back to the </span><span style="background-color:transparent;color:#000000;">'''terminal'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">Let’s stop the </span><span style="background-color:transparent;color:#000000;">'''server'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | | + | |
− | | + | |
− | <span style="background-color:transparent;color:#000000;">And </span><span style="background-color:transparent;color:#000000;">'''deactivate'''</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">the</span><span style="background-color:transparent;color:#000000;"> </span><span style="background-color:transparent;color:#000000;">'''virtual environment'''</span><span style="background-color:transparent;color:#000000;">.</span>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;" | + | |
− | | style="color:#000000;" | Only narration | + | |
− | || <div style="color:#000000;">This brings us to an end of this tutorial.</div>
| + | |
− | | + | |
− | | + | |
− | <div style="color:#000000;">Let us summarise.</div>
| + | |
− | |- style="border:1pt solid #000000;padding:0.176cm;"
| + | |
− | || <span style="background-color:transparent;color:#000000;">Slide 8: </span><span style="background-color:transparent;color:#000000;">'''Summary'''</span>
| + | |
− | || <div style="color:#000000;">In this tutorial, we learnt about-</div> | + | |
− | | + | |
− | <div style="color:#000000;"> </div>* <div style="color:#000000;"><span style="background-color:transparent;">'''Templating'''</span><span style="background-color:transparent;"> in </span><span style="background-color:transparent;">'''flask'''</span><span style="background-color:transparent;"> to write clean code.</span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">Using </span><span style="background-color:transparent;">'''variables'''</span><span style="background-color:transparent;"> in the </span><span style="background-color:transparent;">'''jinja2 templating language.'''</span></div>
| + | |
− | * <div style="color:#000000;"><span style="background-color:transparent;">The </span><span style="background-color:transparent;">'''View'''</span><span style="background-color:transparent;"> part of </span><span style="background-color:transparent;">'''MVC'''</span><span style="background-color:transparent;">.</span></div>
| + | |
− | | + | |
| | | |
| + | Please download and watch it. |
| |- | | |- |
− | | style="border-top:1pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-top:0.176cm;padding-bottom:0.176cm;padding-left:0.079cm;padding-right:0.176cm;" | | + | || Slide: Spoken Tutorial workshops |
− | | + | || The '''Spoken Tutorial Project''' team conducts workshops and gives certificates. |
− | <div style="color:#000000;">Slide: About Spoken Tutorial project</div>
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− | | style="border-top:1pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-top:0.176cm;padding-bottom:0.176cm;padding-left:0.079cm;padding-right:0.176cm;" | <div style="color:#000000;">The video at the following link summarises the Spoken Tutorial project.</div>
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− | <div style="color:#000000;">Please download and watch it.</div>
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− | |- style="background-color:#ffffff;border:0.5pt solid #000000;padding-top:0.176cm;padding-bottom:0.176cm;padding-left:0.095cm;padding-right:0.176cm;"
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− | || <div style="color:#000000;">Slide:</div>
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− | <div style="color:#000000;">Spoken Tutorial workshops</div>
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− | || <span style="background-color:#ffffff;color:#000000;">The </span><span style="background-color:#ffffff;color:#000000;">'''Spoken Tutorial Project'''</span><span style="background-color:#ffffff;color:#000000;"> </span><span style="background-color:#ffffff;color:#000000;">team </span><span style="background-color:transparent;color:#000000;">conducts workshops and gives certificates.</span> | + | |
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− | <div style="color:#000000;">For more details, please write to us.</div>
| + | For more details, please write to us. |
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− | | style="border-top:0.5pt solid #000000;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.176cm;color:#000000;" | Slide: Forum for specific questions: | + | || Slide: Forum for specific questions: |
− | | style="border-top:0.5pt solid #000000;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.176cm;color:#000000;" | Please post your timed queries in this forum. | + | || Please post your timed queries in this forum. |
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− | | style="background-color:#ffffff;border-top:1pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-top:0.176cm;padding-bottom:0.176cm;padding-left:0.095cm;padding-right:0.176cm;color:#000000;" | Slide: Acknowledgement | + | || Slide: Acknowledgement |
− | | style="border-top:1pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-top:0.176cm;padding-bottom:0.176cm;padding-left:0.095cm;padding-right:0.176cm;" | <div style="color:#000000;">Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India.</div> | + | || Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India. |
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− | | + | More information on this mission is available at this link. |
− | <div style="color:#000000;">More information on this mission is available at this link.</div>
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− | | style="border-top:0.5pt solid #000000;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.176cm;" | | + | || |
− | | style="border-top:0.5pt solid #000000;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.176cm;" | <div style="color:#000000;">This is Siddhartha Sarkar signing off. </div> | + | || This is Siddhartha Sarkar signing off. |
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− | <div style="color:#000000;">Thanks for watching.</div>
| + | Thanks for watching. |
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Keywords: Video tutorial, Python Flask, flask templates, render_ template, jinja2, variables in templates.