Membership operators in Python are used to test whether a value is a member of a sequence or collection. They return boolean values (True or False) based on the presence of the value in the sequence. Here are the two membership operators in Python:
in: Returns True if the value is present in the sequence.not in: Returns True if the value is not present in the sequence.Let's see some examples of using membership operators in Python:
# Using 'in' operator with lists
numbers = [1, 2, 3, 4, 5]
result = 3 in numbers
print(result)
# Using 'not in' operator with strings
message = "Hello, World!"
result = "Python" not in message
print(result)
# Using 'in' operator with dictionaries
student_grades = {"Alice": 85, "Bob": 92, "Charlie": 78}
result = "Bob" in student_grades
print(result)
# Using 'not in' operator with sets
fruits = {"apple", "banana", "cherry"}
result = "orange" not in fruits
print(result)
Membership operators are useful for checking the presence of specific elements in collections, allowing you to make decisions based on membership in your Python programs.