Python String islower() Method

Python string islower() method returns True if all characters in the string are in lowercase. It returns False if not in lowercase.

Signature

Parameters

No parameter is required.

Return

It returns either True or False.

Let's see some examples of islower() method to understand it's functionalities.

Python String islower() Method Example 1

A simple example to understand how to apply this method. It returns true, see the example below.

Output:

True 

Python String islower() Method Example 2

It returns False if any single char found in other case than lowercase. See the example below.

Output:

False 

Python String islower() Method Example 3

String can have digits also and this method works in letters case and ignores digits. So it returns True, see the example below.

Output:

True