Python 3 – Membership Operator Example
Python 3 – Membership Operator Examples
Python’s membership operators are used to test for membership in sequences, such as strings, lists, or tuples. There are two membership operators, as described below.
| Operator | Description | Example |
|---|---|---|
| in | Evaluates to true if the variable is found in the specified sequence, otherwise it evaluates to false. | x in y, where in evaluates to 1 if x is a member of the sequence y. |
| not in | Evaluates to true if the variable is not found in the specified sequence, otherwise it evaluates to false. | x not in y. Here, not in evaluates to 1 if x is not a member of the sequence y. |
Example
#!/usr/bin/python3
a = 10
b = 20
list = [1, 2, 3, 4, 5 ]
if ( a in list ):
print ("Line 1 - a is in the given list")
else:
print ("Line 1 - a is not in the given list")
if ( b not in list ):
print ("Line 2 - b is not in the given list")
else:
print ("Line 2 - b is in the given list")
c = b/a
if ( c in list ):
print ("Line 3 - a is in the given list")
else:
print ("Line 3 - a is in the given list") is not in the given list")
Output
When the above program is executed, it produces the following output.
Line 1 - a is not in the given list
Line 2 - b is not in the given list
Line 3 - a is in the given list