Python String islower()

The syntax of islower() is:

string.islower()

islower() parameters

The islower() method doesn't take any parameters.

Return Value from islower()

The islower() method returns:

• True if all alphabets that exist in the string are lowercase alphabets.
• False if the string contains at least one uppercase alphabet.

Example 1: Return Value from islower()

Output

True
True
False

Example 2: How to use islower() in a program?

Output

Does not contain uppercase letter.
Contains uppercase letter.