python set contains code example

Example 1: checking if a value is in a set python

thisset = {"apple", "banana", "cherry"}

if "apple" in thisset:
  print("Yes, 'apple' is in this set")

Example 2: 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 3: 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 4: set except python

# Program to perform different set operations 
# as we do in  mathematics 
  
# sets are define 
A = {0, 2, 4, 6, 8}; 
B = {1, 2, 3, 4, 5}; 
  
# union 
print("Union :", A | B) 
  
# intersection 
print("Intersection :", A & B) 
  
# difference 
print("Difference :", A - B) 
  
# symmetric difference 
print("Symmetric difference :", A ^ B)

Example 5: 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 6: python set contains

a_set = {1, 2, 3}
one_in_a_set = 1 in a_set # True