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Python-3.4.3/C2/Accessing-parts-of-arrays/English - Revision history
2026-05-20T19:33:54Z
Revision history for this page on the wiki
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https://script.spoken-tutorial.org/index.php?title=Python-3.4.3/C2/Accessing-parts-of-arrays/English&diff=43147&oldid=prev
Nancyvarkey at 16:30, 6 May 2018
2018-05-06T16:30:33Z
<p></p>
<a href="https://script.spoken-tutorial.org/index.php?title=Python-3.4.3/C2/Accessing-parts-of-arrays/English&diff=43147&oldid=43129">Show changes</a>
Nancyvarkey
https://script.spoken-tutorial.org/index.php?title=Python-3.4.3/C2/Accessing-parts-of-arrays/English&diff=43129&oldid=prev
Priyacst at 11:08, 4 May 2018
2018-05-04T11:08:50Z
<p></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 11:08, 4 May 2018</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>We have already learnt about '''arange<del class="diffchange diffchange-inline">()</del>''' and''' reshape<del class="diffchange diffchange-inline">() </del>methods''' in an earlier tutorial.</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>We have already learnt about '''arange''' and''' reshape methods''' in an earlier tutorial.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''A'''</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''A'''</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Now, let us see the contents of A and C.</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Now, let us see the contents of A and C.</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Type, '''A '''</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Type, '''A '''</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[1:, 0]</nowiki>'''</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[1:, 0]</nowiki>'''</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| We can also get the same elements by typing '''C '''''square brackets '''''1 '''colon comma''' 0'''</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| We can also get the same elements by typing '''C '''''<ins class="diffchange diffchange-inline">inside </ins>square brackets '''''1 '''colon comma''' 0'''</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td></tr>
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<td colspan="2" class="diff-lineno">Line 559:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div># How do we access the element 18 from the given array A?  </div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div># How do we access the element 18 from the given array A?  </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div># How do we obtain the elements <nowiki>[[21, 22], [31, 32]] </nowiki>from the given array B  </div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div># How do we obtain the elements <nowiki>[[21, 22], [31, 32]] </nowiki>from the given array B<ins class="diffchange diffchange-inline">?</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td colspan="2" class="diff-lineno">Line 574:</td>
<td colspan="2" class="diff-lineno">Line 575:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div># The element 18 in array A has index number 2. Hence, we can access it as A of 2</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div># The element 18 in array A has index number 2. Hence, we can access it as A of 2</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div># To obtain the central four numbers in the array B, we say, <del class="diffchange diffchange-inline"><nowiki></del>B<del class="diffchange diffchange-inline">[</del>1<del class="diffchange diffchange-inline">:</del>3<del class="diffchange diffchange-inline">, </del>1<del class="diffchange diffchange-inline">:</del>3<del class="diffchange diffchange-inline">]</nowiki></del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div># To obtain the central four numbers in the array B, we say, B <ins class="diffchange diffchange-inline">''inside square brackets ''</ins>1 <ins class="diffchange diffchange-inline">colon </ins>3 <ins class="diffchange diffchange-inline">comma </ins>1 <ins class="diffchange diffchange-inline">colon </ins>3</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td></tr>
</table>
Priyacst
https://script.spoken-tutorial.org/index.php?title=Python-3.4.3/C2/Accessing-parts-of-arrays/English&diff=43118&oldid=prev
Priyacst: Created page with " {| style="border-spacing:0;" | style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| <ce..."
2018-05-04T05:32:02Z
<p>Created page with " {| style="border-spacing:0;" | style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| <ce..."</p>
<p><b>New page</b></p><div><br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| <center>'''Visual Cue'''</center><br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| <center>'''Narration'''</center><br />
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|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide <br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Welcome to the spoken tutorial on "'''Accessing parts of arrays'''". <br />
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|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide <br />
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Objectives <br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| In this tutorial, we will learn to access and change:<br />
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* Individual '''elements''' of single dimensional and''' '''multi-dimensional '''arrays'''.''' '''<br />
* '''Rows''' and '''columns''' of '''arrays'''. <br />
* Elements of an array, using '''slicing''' and '''striding'''. <br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide <br />
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System Specifications <br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| To record this tutorial, I am using <br />
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* '''Ubuntu Linux 16.04''' operating system<br />
* '''Python 3.4.3 '''and<br />
* '''IPython 5.1.0'''<br />
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|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide <br />
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Pre-requisite slide <br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| To practise this tutorial, you should know how to <br />
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* run basic '''Python '''commands on the '''IPython console.'''<br />
* use''' arrays.'''<br />
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If not, see the relevant '''Python '''tutorials on this website.<br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide<br />
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Sample Arrays<br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Let us begin with the help of an example. <br />
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Consider two '''arrays''', A and C.<br />
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We will use these '''arrays''' throughout this tutorial. <br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| <nowiki>[Terminal]</nowiki><br />
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Open the '''terminal''', type '''ipython3 '''and press '''Enter'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Let us start '''ipython'''.<br />
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Open the '''terminal'''. <br />
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Type '''ipython3 '''and press '''Enter'''.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''import numpy as np'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Let us create the two arrays in terminal.<br />
<br />
<br />
For this, we have to import '''numpy''' library.<br />
<br />
<br />
Type, '''import numpy as np''' and press '''Enter'''.<br />
<br />
<br />
From here onwards, please remember to press the '''Enter''' key after typing every command on the '''terminal'''. <br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''A = np.arange(1,6)'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''A '''''is equal to''''' np '''''dot '''''arange '''''inside parentheses '''''1 '''''comma '''''6 '''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''C = np.arange(1,26).reshape(5,5)'''<br />
<br />
<br />
Highlight arange, reshape<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''C '''''is equal to''''' np '''''dot '''''arange '''''inside parentheses '''''1 '''''comma '''''26 '''''dot '''''reshape '''''inside parentheses''''' 5 '''''comma '''''5 '''<br />
<br />
<br />
We have already learnt about '''arange()''' and''' reshape() methods''' in an earlier tutorial.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''A'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Now, let us see the contents of A and C.<br />
<br />
Type, '''A '''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''C '''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''C '''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Highlight<br />
<br />
<nowiki>A = array([1, 2, 3, 4, 5])</nowiki><br />
<br />
<br />
<nowiki>C = array([[1, 2, 3, 4, 5]</nowiki><br />
<br />
<nowiki>[6, 7, 8, 9, 10],</nowiki><br />
<br />
<nowiki>[11, 12, 13, 14, 15], </nowiki><br />
<br />
<nowiki>[16, 17, 18, 19, 20],</nowiki><br />
<br />
<nowiki>[21, 22, 23, 24, 25]])</nowiki><br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| In '''A''', we have only one row with elements from 1 to 6.<br />
<br />
<br />
'''A''' is a '''one'''-'''dimensional''' '''array.'''<br />
<br />
<br />
In '''C''', we have 1 to 26 elements in the form of matrix of 5 rows and 5 columns.<br />
<br />
<br />
So '''C''' is a '''two'''-'''dimensional''' '''array.'''<br />
<br />
<br />
<nowiki><<PAUSE>></nowiki><br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| <nowiki>Highlight 3 in A = array([1, 2, 3, 4, 5])</nowiki><br />
<br />
<br />
Type '''<nowiki>A[2] </nowiki>'''<br />
<br />
<br />
<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Next, let us see about '''accessing''' individual '''elements''' in an array.<br />
<br />
<br />
To access, the element 3 in array '''A''', we say, A of 2.<br />
<br />
<br />
Type '''A '''''inside square brackets '''''2'''<br />
<br />
<br />
In Python, arrays are zero-indexed. <br />
<br />
<br />
This means, the position of the element starts with 0 instead of 1.<br />
<br />
<br />
<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Highlight array C in slide<br />
<br />
<br />
Type, '''<nowiki>C[2, 3]</nowiki>''' <br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Now, let us access the '''element''' 14 from array '''C'''. <br />
<br />
<br />
14 is in the third '''row''' and the fourth '''column'''.<br />
<br />
<br />
To do this, we say, C of 2,3.<br />
<br />
<br />
Type '''C '''''inside square brackets '''''2 '''''comma''''' 3'''.<br />
<br />
<br />
<nowiki><<PAUSE>></nowiki><br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Highlight array A, C in slide<br />
<br />
<br />
Type '''<nowiki>A[2] = -3</nowiki>'''<br />
<br />
<br />
<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Next we will learn how to change the value of an array.<br />
<br />
<br />
We shall now change 3 to -3 in A and 14 to -14 in C. <br />
<br />
<br />
For this we simply assign the new '''value''' after accessing the '''element'''. <br />
<br />
<br />
Type, '''A '''''inside square brackets '''''2 '''''is equal to minus '''3 '''''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''<nowiki>C[2, 3] = -14</nowiki>'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''C '''''inside square brackets '''''2 '''''comma''''' 3 '''''is equal to minus '''''14'''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''A'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Let us check our operations.<br />
<br />
<br />
Type, '''A'''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type''' C'''<br />
<br />
<br />
Highlight -3 and -14<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''C'''<br />
<br />
<br />
You can see that the elements are changed now.<br />
<br />
<br />
Likewise you can change any single element''' '''in an array.<br />
<br />
<br />
<nowiki><<PAUSE>></nowiki><br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Highlight array C in slide<br />
<br />
<br />
Type, '''<nowiki>C[2] </nowiki>'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Next let us learn to change more than one '''elements''' at a time. <br />
<br />
<br />
First with '''rows '''and then with '''columns'''. <br />
<br />
<br />
Let us access one '''row''' of C, say the third '''row'''. <br />
<br />
<br />
Type, '''C '''''inside square brackets '''''2'''<br />
<br />
<br />
We can see that the third row of the array is displayed now.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Slide:<br />
<br />
Negative Indexing<br />
<br />
<br />
<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Python programming supports negative indexing of arrays.<br />
<br />
<br />
This means the index value of<br />
<br />
* -1 gives the last element and <br />
* -2 gives the second to last element of an array.<br />
<br />
<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[4] </nowiki>'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| We can access the last '''row''' of C in 2 ways.<br />
<br />
<br />
Type '''C '''''inside square brackets '''''4'''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[-1]</nowiki>'''<br />
<br />
<br />
Highlight the outputs<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Or''' '''with negative indexing as''' C '''''inside square brackets minus '''''1'''<br />
<br />
<br />
Notice that both the outputs are same.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[-1] = [0, 0, 0, 0, 0]</nowiki>''' <br />
<br />
<br />
<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Now, we will learn to change the last '''row''' into all '''zeros.'''<br />
<br />
<br />
Type '''C '''''inside square brackets minus ''1 is ''equal to''''' '''''inside square brackets 0 comma 0 comma 0 comma 0 comma 0''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type''' C'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type''' C'''<br />
<br />
<br />
Notice that zeroes are displayed in the last row of the array C.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type'''<nowiki> C[-1] = 2</nowiki>'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| We can also type,''' C '''''inside square brackets minus '''''1 '''''is equal to''''' 2.'''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type C<br />
<br />
<br />
Highlight the last row<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type C <br />
<br />
<br />
And check with the changes made.<br />
<br />
<br />
<nowiki><<PAUSE>></nowiki><br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Slicing slide<br />
<br />
<br />
<nowiki>[start:stop]</nowiki><br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Now let us learn to slice an array.<br />
<br />
<br />
Slicing of an array is done to access parts of an array.<br />
<br />
<br />
Slicing syntax is inside square brackets '''start '''colon '''stop.'''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Striding slide<br />
<br />
<br />
syntax '''<nowiki>[start:stop:step]</nowiki>'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Striding uses the ‘step’ value to jump between the elements in an array<br />
<br />
<br />
Striding syntax is inside square brackets '''start '''colon '''stop '''colon''' step.'''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Switch to terminal.<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Switch back to the terminal.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[0:3,2] </nowiki>'''<br />
<br />
<br />
<nowiki>Highlight array([ 3, </nowiki>8, 13])<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''C '''''inside square brackets '''''0 '''colon '''3 '''comma''' 2'''<br />
<br />
<br />
0 and 3 corresponds to start and stop values for row slicing and 2 corresponds to column index.<br />
<br />
<br />
We get the '''elements''' of '''rows indexed from 0 to 2 and column''' '''indexed''' by 2. <br />
<br />
<br />
Hence we have sliced the array.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| <nowiki>Highlight in C ([11, 12, 13])</nowiki><br />
<br />
<br />
Type '''<nowiki>C[2,0:3] </nowiki>'''<br />
<br />
<br />
Highlight '''2 '''and '''0:3'''<br />
<br />
<br />
<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Now we will access the '''elements''' of '''row''' with '''index''' 2, and first 2 columns.<br />
<br />
<br />
Type '''C '''''inside square brackets '''''2''' comma''' 0 '''colon '''3'''<br />
<br />
<br />
2 corresponds to row index and 0 and 3 corresponds to start and stop values for column slicing.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide<br />
<br />
<br />
Exercise 1<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Pause the video. <br />
<br />
<br />
Try this exercise and then resume the video.<br />
<br />
<br />
Obtain the following elements one by one from array C.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Switch to terminal<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Switch to the terminal for the solution. <br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[1, 1:3]</nowiki>'''<br />
<br />
<br />
<nowiki>Highlight[7,8]</nowiki><br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''C '''''inside square brackets '''''1 '''comma''' 1 '''colon '''3'''<br />
<br />
<br />
We get the elements 7 and 8.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[0:4, 0]</nowiki>''' <br />
<br />
<br />
<nowiki>Highlight [1, 6, 11, 16]</nowiki><br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''C '''''inside square brackets '''''0 '''colon '''4 '''comma''' 0 '''<br />
<br />
<br />
We get the elements 1, 6, 11 and 16<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[1:5, 0] </nowiki>'''<br />
<br />
<br />
'''Highlight '''<nowiki>[6, 11, 16, 0]</nowiki><br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''C '''''inside square brackets '''''1 '''colon '''5 '''comma''' 0'''<br />
<br />
<br />
We get the elements 6, 11, 16 and 2<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[1:, 0]</nowiki>'''<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| We can also get the same elements by typing '''C '''''square brackets '''''1 '''colon comma''' 0'''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide <br />
<br />
<br />
Exercise 2 <br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Pause the video. <br />
<br />
<br />
Try this exercise and then resume the video.<br />
<br />
<br />
<nowiki>Obtain the elements [[8, 9], [13, -14]] from array C. </nowiki><br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Switch to terminal<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Switch to the terminal for the solution. <br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[1:3, 2:4]</nowiki>'''<br />
<br />
<br />
Highlight the output<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type, '''C '''''inside square brackets '''''1 '''colon '''3 '''comma''' 2 '''colon '''4'''<br />
<br />
<br />
We got the required '''elements'''. <br />
<br />
<br />
<nowiki><<PAUSE>></nowiki><br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[0:5:2, 0:5:2] </nowiki>'''<br />
<br />
<br />
<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Next we will learn the idea of '''striding''' using the smaller '''array''' C. <br />
<br />
<br />
We will try to access only the odd rows and columns i.e first, third and fifth.<br />
<br />
<br />
Type, '''C '''''inside square brackets '''''0 '''colon '''5 '''colon '''2 '''comma''' 0 '''colon '''5 '''colon '''2'''<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Type '''<nowiki>C[::2, ::2] </nowiki>'''<br />
<br />
<br />
Highlight the output<br />
<br />
<br />
<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| We can also type '''C '''''inside square brackets colon colon '''''2 '''comma colon colon''' 2 '''<br />
<br />
<br />
We can see that only the odd rows and columns are displayed.<br />
<br />
|-<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Highlight 2 in '''<nowiki>C[::2, ::2] </nowiki>'''<br />
<br />
<br />
Type '''<nowiki>C[1::2, ::2] </nowiki>'''<br />
<br />
<br />
Highlight the output<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| The step 2 specifies the jump between the elements. <br />
<br />
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This is called '''striding'''.<br />
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If no step is specified, a default value of 1 is assumed. <br />
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Type '''C '''''inside square brackets''''' 1 '''colon colon '''2 '''comma colon colon '''2 '''<br />
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We get the elements, as shown.<br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide<br />
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Exercise 3<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Pause the video. <br />
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Try this exercise and then resume the video.<br />
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Obtain the following elements from array C.<br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide Solution 3<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| The solution is on your screen. <br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide<br />
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Summary slide <br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| This brings us to the end of this tutorial. <br />
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In this tutorial, we have learnt to,''' '''<br />
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# Manipulate '''single''' and '''multi''' '''dimensional''' '''arrays'''. <br />
# Access and change individual '''elements''' by using their '''index numbers.'''<br />
# Access and change '''rows''' and '''columns''' of arrays by specifying the '''row''' and '''column''' numbers. <br />
# '''Slice''' and '''stride''' on '''arrays'''. <br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide<br />
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Evaluation <br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Here are some self assessment questions for you to solve <br />
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# How do we access the element 18 from the given array A? <br />
# How do we obtain the elements <nowiki>[[21, 22], [31, 32]] </nowiki>from the given array B <br />
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Solutions <br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| And the answers,''' '''<br />
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# The element 18 in array A has index number 2. Hence, we can access it as A of 2<br />
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# To obtain the central four numbers in the array B, we say, <nowiki>B[1:3, 1:3]</nowiki><br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide Forum <br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Please post your timed queries in this forum.<br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide Fossee Forum <br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Please post your general queries on Python in this forum.<br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Slide Textbook Companion <br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| FOSSEE team coordinates the TBC project.<br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide Acknowledgement <br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Spoken-tutorial is funded by NMEICT, MHRD, Govt. of India. <br />
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For more details, visit this website.<br />
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| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| Show Slide<br />
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Thank You<br />
| style="background-color:#ffffff;border:0.5pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.097cm;padding-right:0.191cm;"| This is Priya from IIT Bombay signing off. Thanks for watching.<br />
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Priyacst