Python Membership Operators

PythonServer Side ProgrammingProgramming

Python’s membership operators test for membership in a sequence, such as strings, lists, or tuples. There are two membership operators as explained below −

Sr.NoOperator & DescriptionExample
1in
Evaluates to true if it finds a variable in the specified sequence and false otherwise.
x in y, here in results in a 1 if x is a member of sequence y.
2not in
Evaluates to true if it does not finds a variable in the specified sequence and false otherwise.
x not in y, here not in results in a 1 if x is not a member of sequence y.

Example

 Live Demo

#!/usr/bin/python
a = 10
b = 20
list = [1, 2, 3, 4, 5 ];
if ( a in list ):
   print "Line 1 - a is available in the given list"
else:
   print "Line 1 - a is not available in the given list"
if ( b not in list ):
   print "Line 2 - b is not available in the given list"
else:
   print "Line 2 - b is available in the given list"
a = 2
if ( a in list ):
   print "Line 3 - a is available in the given list"
else:
   print "Line 3 - a is not available in the given list"

Output

When you execute the above program it produces the following result −

Line 1 - a is not available in the given list
Line 2 - b is not available in the given list
Line 3 - a is available in the given list
raja
Published on 24-Jan-2020 12:00:24
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