Python/C3/Sets/English-timed - Revision history

PoojaMoolya at 07:12, 27 March 2017

2017-03-27T07:12:33Z

PoojaMoolya at 11:06, 20 February 2017

2017-02-20T11:06:20Z

Gaurav at 10:08, 10 July 2014

2014-07-10T10:08:16Z

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Sneha at 10:10, 28 March 2013

2013-03-28T10:10:54Z

Minal: Created page with '{| border=1 !Timing !Narration |- | 0:00 | Hello friends and welcome to the tutorial on 'Sets'. |- | 0:05 | At the end of this tutorial, you will be able to, # Create sets from…'

2013-01-02T12:12:03Z

Created page with '{| border=1 !Timing !Narration |- | 0:00 | Hello friends and welcome to the tutorial on 'Sets'. |- | 0:05 | At the end of this tutorial, you will be able to, # Create sets from…'

New page

{| border=1
!Timing
!Narration
|-
| 0:00
| Hello friends and welcome to the tutorial on 'Sets'.

|-
| 0:05
| At the end of this tutorial, you will be able to,

# Create sets from lists.
# Perform union, intersection and symmetric difference operations.
# Check if a set is a subset of other.
# Understand various similarities with lists like length and containership.

|-
| 0:25
| Before beginning this tutorial,we would suggest you to complete the tutorial on "Getting started with List"

|-
|0:35
|Now, type ipython in the command.

|-
| 0:43
|
So, What are sets?

|-
|0:46
| Sets are data structures which contain unique elements.

|-
|0:49
|In other words, duplicates are not allowed in sets.

|-
| 0:54
| Lets look at how to input sets.

|-
|0:59
|So type a underscore list is equal to within brackets 1,2,1,4,5,6,2.

|-
|1:15
|Then a is equal to set in brackets a underscore list.

|-
|1:25
|Then type a.

|-
| 1:28
| We can see that duplicates are removed and the set contains only unique elements.

|-
|1:31
| Now let us perform some operations on sets.

|-
|1:35
| For this, we shall first create a pair of sets

|-
| 1:40
| f10 is equal to set of within brackets and square brackets 1,2,3,5,8

|-
|1:54
| p10 is equal to set of within brackets and square brackets 2,3,5,7.

|-
|2:07
|f10 is the set of fibonacci series numbers from 1 to 10.

|-
|2:19
|p10 is the set of prime numbers from 1 to 10.

|-
|2:22
|Various operations can be performed on sets.

|-
|2:25
| For example, The vertical bar and in bracket pipe character stands for union.

|-
|2:37
|So type f10 then a vertical bar p10 and hit Enter.

|-
| 2:46
| It gave the union of f10 and p10.

|-
|2:50
|The ampersand character stands for intersection.

|-
|2:53
|So type f10 ampersand p10.

|-
| 3:00
| It gave the intersection of f10 and p10 similarly.

|-
|3:05
|f10 - p10 gives all the elements that are in f10 but not in p10 .

|-
|3:13
|So type f10 hyphen p10

|-
|3:22
|and f10 charat p10 gives all the elements in f10 union p10 but not in f10 intersection p10. So type f10 charat p10.

|-
| 3:40
| In mathematical terms, it gives the symmetric difference.

|-
|3:46
|Sets also support checking of subsets.

|-
|3:50
|So lets type b is equal to within brackets and square brackets 1,2.

|-
|4:00
|Then b is less than f10.

|-
| 4:05
| It gives a <tt>True</tt> since b is a proper subset of f10.

|-
|4:09
|Similarly, type f10 less than f10.

|-
| 4:15
| It gives a <tt>False</tt> since f10 is not a proper subset.

|-
|4:19
|Hence the right way to do would be f10 less than or equal to f10.

|-
| 4:31
| we get a <tt>True</tt> since every set is a subset of itself.

|-
|4:37
|Sets can be iterated upon just like lists and tuples.

|-
|4:42
|for i in f10 colon in the command and then type print i comma

|-
| 5:01
| It prints the elements of f10.

|-
|5:03
|The length and containership check on sets is similar as in lists and tuples.

|-
|5:12
|So type len within brackets f10 and hit Enter.

|-
|5:22
|And It shows 5, type 1 in f10.

|-
|5:27
|Then type 2 in f10.

|-
|5:33
| And prints <tt>True</tt> and <tt>True</tt> respectively

|-
|5:45
|Now, pause the video here, try out the following exercise and resume the video.

|-
| 5:50
| '''<nowiki>Given a list of marks, marks is equal to within square brackets 20, 23, 22, 23, 20, 21, 23</nowiki>'''

|-
|6:01
|list all the duplicates

|-
| 6:04
| Duplicates marks are the marks left out when we remove each element of the list exactly one time.

|-
|6:13
|So type marks is equal to within square brackets 20,23,22,23,20,21,23.

|-
|6:33
|Then type marks underscore set is equal to set within bracket marks.

|-
|6:44
|then for mark in marks underscore set colon, then marks dot remove within brackets mark.

|-
| 7:05
| We are now left with only duplicates in the list <tt>marks</tt>

|-
|7:10
|Hence Type duplicates is equal to set within brackets marks and hit enter.

|-
|7:24
|Then type duplicate.

|-
|7:27
|Hence, We obtained our required solution

|-
| 7:30
| This brings us to the end of the tutorial.

|-
|7:34
| In this tutorial, we have learnt to,

|-
|7:36
| Make sets from lists.

|-
|7;37
| Perform union, intersection and symmetric difference operations. by using the operators ''|'', ''&'' and ''^'' respectively.

|-
|7:49
|Check if a set is a subset of other using the ''<nowiki><</nowiki>'' and ''<nowiki><=</nowiki>'' operators.

|-
|7:58
|Then, Understand various similarities with lists like length and containership.

|-
| 8:05
| Here are some self assessment questions for you to solve

|-
|8:09
|1. First one, If <tt><nowiki>a is equal to within square brackets 1, 1, 2, 3, 3, 5, 5, 8</nowiki></tt>.

|-
|8:18
| And What is set(a)

|-
|8:23
|The options are

|-
|8:26
| <nowiki>set within brackets and square brackets 1, 1, 2, 3, 3, 5, 5, 8</nowiki>

|-
|8:31
|Second one <nowiki>set within brackets 1, 2, 3, 5, 8</nowiki>

|-
|8:36
| Then the third option <nowiki>set([1, 2, 3, 3, 5, 5])</nowiki>

|-
|8:41
| Then the last option is Error.

|-
|8:43
|2. Second question, <tt>'''<nowiki>odd is equal to set within brackets 1, 3, 5, 7, 9</nowiki></tt> and <tt><nowiki>squares is equal to set within brackets 1, 4, 9, 16</nowiki></tt>.

|-
|8:57
|'''<br/> How do you find the symmetric difference of these two sets?

|-
|9:02
|3. The third questions is, <tt>a</tt> is a set.

|-
|9:05
| how do you check if a variable <tt>b</tt> exists in <tt>a</tt>?

|-
| 9:11
| Now And the answers,

|-
|9:15
|1. First answer is, set of a will have all the common elements in the list <tt>a</tt>, that is <tt><nowiki>set within brackets 1, 2, 3, 5, 8</nowiki></tt>.

|-
|9:28
|2. The Second answer is , To find the symmetric difference between two sets, we use the operator charat.

|-
|9:37
| So type odd charat squares

|-
|9:42
|3. Final answer is, To check the containership, we say,

|-
|9:45
|b in a

|-
| 9:50
| So Hope you have enjoyed this tutorial and found it useful.

|-
|9:53
|Thank you!

|}

@@ Line 9: / Line 9: @@
 |-
 | 00:05
-| At the end of this tutorial, you will be able to,
+| At the end of this tutorial, you will be able to
 Create sets from lists.
-# Create sets from lists.
+Perform union, intersection and symmetric difference operations.
-# Perform union, intersection and symmetric difference operations.
+Check if a set is a subset of other.
-# Check if a set is a subset of other.
+Understand various similarities with lists like length and containership.
-# Understand various similarities with lists like length and containership.
 |-
@@ Line 262: / Line 261: @@
 |-
 |08:09
-|1. First one, If a is equal to within square brackets 1, 1, 2, 3, 3, 5, 5, 8
+|First one, If a is equal to within square brackets 1, 1, 2, 3, 3, 5, 5, 8
 |-
@@ Line 290: / Line 289: @@
 |-
 |08:43
-|2. Second question,  odd is equal to set within brackets 1, 3, 5, 7, 9  and  squares is equal to set within brackets 1, 4, 9, 16
+| Second question,  odd is equal to set within brackets 1, 3, 5, 7, 9  and  squares is equal to set within brackets 1, 4, 9, 16
 |-
@@ Line 298: / Line 297: @@
 |-
 |09:02
-|3. The third questions is, a  is a set.
+|The third questions is, a  is a set.
 |-
@@ Line 310: / Line 309: @@
 |-
 |09:15
-|1. First answer is, set of a will have all the common elements in the list  a , that is  set within brackets 1, 2, 3, 5, 8
+|First answer is, set of a will have all the common elements in the list  a , that is  set within brackets 1, 2, 3, 5, 8
 |-
 |09:28
-|2. The Second answer is , To find the symmetric difference between two sets, we use the operator charat.
+| The Second answer is , To find the symmetric difference between two sets, we use the operator charat.
 |-
@@ Line 322: / Line 321: @@
 |-
 |09:42
-|3. Final answer is, To check the container ship, we say,
+| Final answer is, To check the container ship, we say,
 |-

@@ Line 241: / Line 241: @@
 |-
 |07:36
-| Make sets from lists.
+| Make sets from lists. Perform union, intersection and symmetric difference operations. by using the operators ''|'', ''&'' and ''^'' respectively.
-−
-|-
-|07:37
-| Perform union, intersection and symmetric difference operations. by using the operators ''|'', ''&'' and ''^'' respectively.
 |-

@@ Line 25: / Line 25: @@
 |-
 | 0:43
 | So, What are sets?
 So, What are sets?
 |-
@@ Line 46: / Line 45: @@
 |-
 |1:15
-|Then a is equal to set in brackets a underscore list.
+|Then a is equal to set in brackets 'a' underscore list.
 |-
 |1:25
-|Then type a.
+|Then type 'a'.
 |-
@@ Line 66: / Line 65: @@
 |-
 |  1:40
-| f10 is equal to set of within brackets and square brackets 1,2,3,5,8
+| f10 is equal to set in  brackets and square brackets 1,2,3,5,8
 |-
@@ Line 90: / Line 89: @@
 |-
 |2:37
-|So type f10 then a vertical bar p10 and hit Enter.
+|So type f10 then a vertical bar then  p10 and hit Enter.
 |-
@@ Line 130: / Line 129: @@
 |-
 |3:50
-|So lets type b is equal to within brackets and square brackets 1,2.
+|So lets type b is equal to in brackets and square brackets 1,2.
 |-
@@ Line 138: / Line 137: @@
 |-
 | 4:05
-| It gives a <tt>True</tt> since b is a proper subset of f10.
+| It gives a True since b is a proper subset of f10.
 |-
@@ Line 146: / Line 145: @@
 |-
 | 4:15
-| It gives a <tt>False</tt> since f10 is not a proper subset.
+| It gives a  False since f10 is not a proper subset.
 |-
@@ Line 154: / Line 153: @@
 |-
 | 4:31
-| we get a <tt>True</tt> since every set is a subset of itself.
+| we get a True  since every set is a subset of itself.
 |-
@@ Line 170: / Line 169: @@
 |-
 |5:03
-|The length and containership check on sets is similar as in lists and tuples.
+|The length and container ship check on sets is similar as in lists and tuples.
 |-
@@ Line 186: / Line 185: @@
 |-
 |5:33
-| And prints <tt>True</tt> and <tt>True</tt> respectively
+| And prints   True  and True  respectively
 |-
@@ Line 194: / Line 193: @@
 |-
 | 5:50
-| '''<nowiki>Given a list of marks, marks is equal to within square brackets 20, 23, 22, 23, 20, 21, 23</nowiki>'''
+| ''' Given a list of marks, marks is equal to within square brackets 20, 23, 22, 23, 20, 21, 23 '''
 |-
@@ Line 206: / Line 205: @@
 |-
 |6:13
-|So type marks is equal to within square brackets 20,23,22,23,20,21,23.
+|So type marks is equal to  in square brackets 20,23,22,23,20,21,23.
 |-
@@ Line 218: / Line 217: @@
 |-
 | 7:05
-| We are now left with only duplicates in the list <tt>marks</tt>
+| We are now left with only duplicates in the list marks +
 |-
 |7:10
-|Hence Type duplicates is equal to set within brackets marks and hit enter.
+|Hence Type duplicates is equal to set   marks and hit enter.
 |-
@@ Line 250: / Line 249: @@
 |-
 |7:49
-|Check if a set is a subset of other using the ''<nowiki><</nowiki>'' and ''<nowiki><=</nowiki>'' operators.
+|Check if a set is a subset of other using the ' '' and ' = '' operators.
 |-
@@ Line 262: / Line 261: @@
 |-
 |8:09
-|1. First one, If <tt><nowiki>a is equal to within square brackets 1, 1, 2, 3, 3, 5, 5, 8</nowiki></tt>.
+|1. First one, If a is equal to within square brackets 1, 1, 2, 3, 3, 5, 5, 8
-−
 |-
 |8:18
@@ Line 274: / Line 272: @@
 |-
 |8:26
-| <nowiki>set within brackets and square brackets 1, 1, 2, 3, 3, 5, 5, 8</nowiki>
+|  set within brackets and square brackets 1, 1, 2, 3, 3, 5, 5, 8
 |-
 |8:31
-|Second one <nowiki>set within brackets 1, 2, 3, 5, 8</nowiki>
+|Second one  set within brackets 1, 2, 3, 5, 8
-−
 |-
 |8:36
-| Then the third option <nowiki>set([1, 2, 3, 3, 5, 5])</nowiki>
+| Then the third option  set([1, 2, 3, 3, 5, 5])
-−
 |-
 |8:41
@@ Line 290: / Line 286: @@
 |-
 |8:43
-|2. Second question,  <tt>'''<nowiki>odd is equal to set within brackets 1, 3, 5, 7, 9</nowiki></tt> and <tt><nowiki>squares is equal to set within brackets 1, 4, 9, 16</nowiki></tt>.
+|2. Second question,  odd is equal to set within brackets 1, 3, 5, 7, 9  and  squares is equal to set within brackets 1, 4, 9, 16
 |-
 |8:57
-|'''<br/> How do you find the symmetric difference of these two sets?
+|''' How do you find the symmetric difference of these two sets?
 |-
 |9:02
-|3. The third questions is, <tt>a</tt> is a set.
+|3. The third questions is, a  is a set.
 |-
 |9:05
-| how do you check if a variable <tt>b</tt> exists in <tt>a</tt>?
+| how do you check if a variable b  exists in a ?
 |-
@@ Line 310: / Line 306: @@
 |-
 |9:15
-|1. First answer is, set of a will have all the common elements in the list <tt>a</tt>, that is <tt><nowiki>set within brackets 1, 2, 3, 5, 8</nowiki></tt>.
+|1. First answer is, set of a will have all the common elements in the list  a , that is  set within brackets 1, 2, 3, 5, 8
 |-
@@ Line 322: / Line 318: @@
 |-
 |9:42
-|3. Final answer is, To check the containership, we say,
+|3. Final answer is, To check the container ship, we say,
 |-