2 Types of Membership Operators in Python
Membership operators in Python are used to check whether a value or variable is member of a sequence (String, List, Tuple, Dictionary or set).
There are two types of membership operators :
| Operator | Description | Example |
| in | It returns true if a value or variable is member of a sequence. | str = ‘Ladder Python’
print(‘d’ in str) It returns True as alphabet ‘d’ is contained in string ‘Ladder Python’ |
| not in |
It returns true if two variables don’t refer to same value or same memory location. | str = ‘Ladder Python’
print(‘k’ not in str) It returns True as alphabet ‘k’ is not contained in string ‘Ladder Python’ |
# Program to demonstrate Membership Operators
str = ‘Ladder Python’ list = [10,20,30,40] dict1 = {1:’a’,2:’b’,3:’c’} |
print(‘d’ in str)
# Output is True as alphabet ‘d’ is contained in ‘Ladder Python’ |
print(‘Tutorial’ not in str)
# Output is True as string value ‘Tutorial’ is not a part of Ladder Python’ |
print(10 in list)
# Output is True as 10 is contained in list |
print(20 not in list)
# Output is false as 20 is contained in list |
print(2 in dict1)
# Output is true as 2 is contained in dictionary dict1 |