Python String isupper() Method

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

Signature

Parameters

No parameter is required.

Return

It returns either True or False.

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

Python String isupper() Method Example 1

Output:

True

Python String isupper() Method Example 2

Output:

True
False

Python String isupper() Method Example 3

Output:

True
False
True