Python String upper()

Python String upper() method converts all lowercase characters in a string into uppercase characters and returns it.

Python String upper() Syntax

Syntax: string.upper()

Parameters: The upper() method doesn’t take any parameters. 

Returns: returns an uppercased string of the given string.

String upper() in Python Example

String with only alphabetic characters

In this example, we will take only alphabet characters, both lower and upper case characters as a Python String and apply the string upper() function to it.

Output: 

Original String:
geeKs For geEkS

Converted String:
GEEKS FOR GEEKS

String with Alphanumeric Characters 

In this example, we will take alphanumeric characters, i.e., a mixture of alphabets and numeric values, and then apply the string upper() function in Python.

Output: 

Original String:
g3Ek5 f0r gE3K5

Converted String:
G3EK5 F0R GE3K5

Use of upper() methods used in a Python Program

One of the common applications of the upper() method is to check if the two strings are the same or not. We will take two strings with different cases, apply upper() to them, and then check if they are the same or not.

Output: 

Strings are same