You can learn about Operators in Python Programs with Outputs helped you to understand the language better.
Python Programming – Membership Operators
Python has membership operators, which test for membership in a sequence, such as strings, lists, or tuples. There are two membership operators explained below:
in Operator
Evaluates to true if it finds a variable in the specified sequence and false otherwise. For example, x in y; here, in results in a 1 if x is a member of sequence y.
not in Operator
Evaluates to true if it does not find a variable in the specified sequence and false otherwise. For example, x not in y. Here not in results in a 1 if x is not a member of sequence y.
- Python Programming – Identity Operators
- Python Programming – Logical/Boolean Operators
- Python Programming – Standard Data Types
Example 17.
Boolean test to find whether a value is inside a con-tainer or not:
>>> t = [1, 2, 4, 5]
>>> 3 in t
False
>>> 4 in t
True
>>> 4 not in t
False
For strings, tests for substrings:
>>> a = ‘abode’
>>> ‘c’ in a
True
>>> ‘cd’ in a
True
Example 18.
Demo of working of Membership Operators.
| From the python shell,enter the following and observe the results: >>> 10 in (40, 20, 10) |
Let’s Try
Write the output of following membership operators operations:
| # Working with membership operators >>> t = [2, 4, 6, 8] >>> 3 in t >>> 4 in t >>> 4 not in t | # Working with membership operators >>> a=’abode’ >>> b in a >>> ‘b’ in a >>> ‘ab’ in a >>> ‘ac’ in a >>> ‘de’ in a |