Python Membership Operators

Python membership operators

Created By: chatGPT

In Python, membership operators are used to test for membership in a sequence, such as a list, tuple, or string. The two membership operators are in and not in. These operators help in determining whether a certain value exists within a collection.

my_list = [1, 2, 3, 4, 5]

# Using 'in' operator
if 3 in my_list:
    print('3 is in the list')

# Using 'not in' operator
if 6 not in my_list:
    print('6 is not in the list')

Here’s a brief explanation of how each operator works:

The in operator checks if a specified value is found within the provided sequence. If the value exists, it returns True; otherwise, it returns False.
The not in operator checks if a specified value is not present in the sequence. If the value does not exist, it returns True; if it does, it returns False.

my_string = 'Hello World'

# Check if 'Hello' is in the string
if 'Hello' in my_string:
    print('Found Hello')

# Check if 'bye' is not in the string
if 'bye' not in my_string:
    print('Bye not found')

These operators can be very useful when you're working with collections of data and need to make decisions based on the presence or absence of certain elements. Using membership operators can make your code cleaner and more intuitive, improving readability.

my_tuple = (10, 20, 30)

# Using 'in' with a tuple
if 20 in my_tuple:
    print('20 is in the tuple')

# Using 'not in' with a tuple
if 40 not in my_tuple:
    print('40 is not in the tuple')