Python Set
Set Overview
Sets are used to store multiple items in a single variable.
A set is a collection which is unordered, unchangeable*, and unindexed.
Set items are unchangeable, but you can remove items and add new items.
Sets are written with curly brackets.
tset = {1,2,3,4,5}
print(tset)
Access Items
You cannot access items in a set by referring to an index or a key.
But you can loop through the set items using a for loop, or ask if a specified value is present in a set, by using the in keywor
tset = {"Crircket","Caram","Football"}
for x in tset:
print(x)
print("banana" in thisset)
Add item to set
using add() , we can add the item to the list.
tset = {"abc","def","ghi")
tset.add("ijk")
print(tset)
Removing item to set
using remove method we can delete the elemebts from set.
tset = {"abc","def","ghi")
tset.remove("abc")
print(tset)
Set Loop items
Using For loop we can loop the items one by one.
tset = {"abc","def","ghi")
for i in test:
print(i)
Set union
it will combine the set and create a new set
set1 = {1,2,3,4,5}
set2 = {2,3,1,8,9}
res1 = set1.union(set2)
print(res1)
Set intersection
it will get the common value from sets.
set1 = {1,2,3,4,5}
set2 = {2,3,1,8,9}
res1 = set1.intersection(set2)
print(res1)
Set difference
| Returns a set containing the difference between two or more sets |
set1 = {1,2,3,4,5}
set2 = {2,3,1,8,9}
res1 = set1.difference(set2)
print(res1)
Set symmetric_difference()
Returns a set with the symmetric differences of two sets
set1 = {1,2,3,4,5}
set2 = {2,3,1,8,9}
res1 = set1.symmetric_difference(set2)
print(res1)
Set issubset()
Return True if all items in set a are present in set b:
a = {1,2,3}
b = {4, 5, 4, 3, 2, 1}
res1 = a.issubset(b)
print(res1)
Set copy()
Returns a copy of the set
a = {1,2,3}
res_final = a.copy()
print(res_final)