Python String upper() Method

Python String upper() method is used to convert all characters in a string into uppercase characters and returns it.

This method doesn’t modify the original string. Instead, it returns a new string.

Syntax

string.upper()

Parameters

This method doesn’t take any parameters.

Return Value

It returns a new string where all the characters are in uppercase. If no lowercase characters exist, it returns an original string.

Visual RepresentationExample 1: How to Use String upper Method

string = "expecto patronum"
print("Original String:", string)

upper_case = string.upper()
print("Uppercase String:", upper_case)

Output

Original String: expecto patronum

Lowercase String: EXPECTO PATRONUM

Example 2: String with Alphanumeric Characters

string = "mlm20 mlm30" 

print("Original String:", string) 

upper_case = string.upper() 

print("Uppercase String:", upper_case)

Output

Original String: mlm20 mlm30

Lowercase String: MLM20 MLM30

Example 3: Comparison of strings using the upper() method

str1 = "MLM20 MLM30"
str2 = "mlm20 mlm30"

if (str1.upper() == str2.upper()):
 print("Strings are same")
else:
 print("Strings are not same")

Output

Strings are same

Python String lower()

Krunal

Krunal Lathiya is a seasoned Computer Science expert with over eight years in the tech industry. He boasts deep knowledge in Data Science and Machine Learning. Versed in Python, JavaScript, PHP, R, and Golang. Skilled in frameworks like Angular and React and platforms such as Node.js. His expertise spans both front-end and back-end development. His proficiency in the Python language stands as a testament to his versatility and commitment to the craft.