Python 3 - String islower() Method

Description

The islower() method checks whether all the case-based characters (letters) of the string are lowercase.

Syntax

Following is the syntax for islower() method −

str.islower()

Parameters

NA

Return Value

This method returns true if all cased characters in the string are lowercase and there is at least one cased character, false otherwise.

Example

The following example shows the usage of islower() method.

#!/usr/bin/python3

str = "THIS is string example....wow!!!"
print (str.islower())

str = "this is string example....wow!!!"
print (str.islower())

Result

When we run above program, it produces the following result −

False
True