How do I uppercase or lowercase a string in Python?

Better Stack Team
Updated on January 26, 2023

To uppercase a string in Python, you can use the upper() method of the string. For example:

string = "hello"
uppercase_string = string.upper()
print(uppercase_string)  # prints "HELLO"

To lowercase a string in Python, you can use the lower() method of the string. For example:

string = "HELLO"
lowercase_string = string.lower()
print(lowercase_string)  # prints "hello"

Both upper() and lower() are string methods, so they can be called on any string object in Python. They do not modify the original string, but instead return a new string with the uppercase or lowercase version of the original string.

Make your mark

Join the writer's program

Are you a developer and love writing and sharing your knowledge with the world? Join our guest writing program and get paid for writing amazing technical guides. We'll get them to the right readers that will appreciate them.

Write for us
Writer of the month
Marin Bezhanov
Marin is a software engineer and architect with a broad range of experience working...
Build on top of Better Stack

Write a script, app or project on top of Better Stack and share it with the world. Make a public repository and share it with us at our email.

or submit a pull request and help us build better products for everyone.

See the full list of amazing projects on github