Example 1: python set &
>>> A = {0, 2, 4, 6, 8};
>>> B = {1, 2, 3, 4, 5};
>>> print("Union :", A | B)
Union : {0, 1, 2, 3, 4, 5, 6, 8}
>>> print("Intersection :", A & B)
Intersection : {2, 4}
>>> print("Difference :", A - B)
Difference : {0, 8, 6}
# elements not present both sets
>>> print("Symmetric difference :", A ^ B)
Symmetric difference : {0, 1, 3, 5, 6, 8}
Example 2: python sets
# You can't create a set like this in Python
my_set = {} # ---- This is a Dictionary/Hashmap
# To create a empty set you have to use the built in method:
my_set = set() # Correct!
set_example = {1,3,2,5,3,6}
print(set_example)
# OUTPUT
# {1,3,2,5,6} ---- Sets do not contain duplicates and are unordered
Example 3: sets in python
The simplest way to create set is:
1. from list
code:
s = [1,2,3]
set = set(s)
print(set)
2. s,add() method
code:
set.add(1)
set.add(2)
set.remove(2)
print(set)
3. Set conatins unique elements
Example 4: python set
set_example = {1, 2, 3, 4, 5, 5, 5}
print(set_example)
# OUTPUT
# {1, 2, 3, 4, 5} ----- Does not print repetitions
Example 5: set in python
A_Set = {1, 2, "hi", "test"}
for i in A_Set: #Loops through the set. You only get the value not the index
print(i) #Prints the current value