Commit 4824b91

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added set & frozen_set program

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	`1`	`+Python 3.9.1 (tags/v3.9.1:1e5d33e, Dec 7 2020, 17:08:21) [MSC v.1927 64 bit (AMD64)] on win32`
	`2`	`+Type "help", "copyright", "credits" or "license()" for more information.`
	`3`	`+>>> # Frozen Set`
	`4`	`+>>> numbers = [1,2,3,4,1,5,6,4,2,3]`
	`5`	`+>>> fs = frozenset(numbers)`
	`6`	`+>>> fs`
	`7`	`+frozenset({1, 2, 3, 4, 5, 6})`
	`8`	`+>>> fs.add(7)`
	`9`	`+Traceback (most recent call last):`
	`10`	`+ File "<pyshell#4>", line 1, in <module>`
	`11`	`+ fs.add(7)`
	`12`	`+AttributeError: 'frozenset' object has no attribute 'add'`
	`13`	`+>>>`
	`14`	`+>>>`
	`15`	`+>>>`
	`16`	`+>>> # some basic operation with set`
	`17`	`+>>>`
	`18`	`+>>> x ={"a","b","c"}`
	`19`	`+>>>`
	`20`	`+>>> "a" in x`
	`21`	`+True`
	`22`	`+>>> "g" in x`
	`23`	`+False`
	`24`	`+>>> for i in x:`
	`25`	`+ print(i)`
	`26`	`+`
	`27`	`+`
	`28`	`+a`
	`29`	`+c`
	`30`	`+b`
	`31`	`+>>> x`
	`32`	`+{'a', 'c', 'b'}`
	`33`	`+>>> y = {"a","h",g"}`
	`34`	`+`
	`35`	`+SyntaxError: EOL while scanning string literal`
	`36`	`+>>> y = {"a","h","g"}`
	`37`	`+>>> x`
	`38`	`+{'a', 'c', 'b'}`
	`39`	`+>>> y`
	`40`	`+{'g', 'h', 'a'}`
	`41`	`+>>> # to find union`
	`42`	`+>>> x\|y`
	`43`	`+{'g', 'c', 'a', 'b', 'h'}`
	`44`	`+>>> # to find intersection`
	`45`	`+>>> x&y`
	`46`	`+{'a'}`
	`47`	`+>>> # to find difference`
	`48`	`+>>> x-y`
	`49`	`+{'c', 'b'}`
	`50`	`+>>> # to find subset`
	`51`	`+>>> x<y`
	`52`	`+False`
	`53`	`+>>> x={"h","g"}`
	`54`	`+>>> x<y`
	`55`	`+True`
	`56`	`+>>>`

Lines changed: 40 additions & 0 deletions

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	`1`	`+Python 3.9.1 (tags/v3.9.1:1e5d33e, Dec 7 2020, 17:08:21) [MSC v.1927 64 bit (AMD64)] on win32`
	`2`	`+Type "help", "copyright", "credits" or "license()" for more information.`
	`3`	`+>>> basket = {"apple","mango","orange","pear","banana","apple"}`
	`4`	`+>>> basket`
	`5`	`+{'apple', 'pear', 'banana', 'orange', 'mango'}`
	`6`	`+>>> a = set()`
	`7`	`+>>> a.add(11)`
	`8`	`+>>> a.add(22)`
	`9`	`+>>> a.add(33)`
	`10`	`+>>> a.add(44)`
	`11`	`+>>> a`
	`12`	`+{33, 11, 44, 22}`
	`13`	`+>>> # don't initialize empty set bcoz python consider it set dictionary`
	`14`	`+>>> b = {}`
	`15`	`+>>> type(b)`
	`16`	`+<class 'dict'>`
	`17`	`+>>> b = {'somrthing'}`
	`18`	`+>>> b`
	`19`	`+{'somrthing'}`
	`20`	`+>>> type(b)`
	`21`	`+<class 'set'>`
	`22`	`+>>> # since set is unordered that means you can't access using index`
	`23`	`+>>> basket[0]`
	`24`	`+Traceback (most recent call last):`
	`25`	`+ File "<pyshell#15>", line 1, in <module>`
	`26`	`+ basket[0]`
	`27`	`+TypeError: 'set' object is not subscriptable`
	`28`	`+>>>`
	`29`	`+>>>`
	`30`	`+>>>`
	`31`	`+>>>`
	`32`	`+>>> # creating set from list by passing list as argument in constructor of set`
	`33`	`+>>> numbers = [1,2,3,4,5,2,1,3,5]`
	`34`	`+>>> set_numbers = set(numbers)`
	`35`	`+>>> set_numbers`
	`36`	`+{1, 2, 3, 4, 5}`
	`37`	`+>>> set_numbers.add(6)`
	`38`	`+>>> set_numbers`
	`39`	`+{1, 2, 3, 4, 5, 6}`
	`40`	`+>>>`

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