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Python 3 reference · String Methods

Python String upper() Method

Return a copy of the string with all cased characters converted to upper case.

Python 3 Since 3.0

Syntax

str.upper()

Return value

A new string.

Examples

Basic useTry it yourself
print("hello world".upper())

Output

HELLO WORLD
Codes, and a special caseTry it yourself
code = "ab-12x"
print(code.upper(), "straße".upper())

Output

AB-12X STRASSE

Version history

VersionChange
Python 3.0Added
  • str.lower() · Return a copy of the string with all cased characters converted to lower case.
  • str.isupper() · Return True if all cased characters are upper case and there is at least one cased character.
  • str.capitalize() · Return a copy of the string with the first character in upper case and the rest in lower case.
  • str.title() · Return a title-cased copy: the first letter of each word upper case and the rest lower case.
  • Python Strings · tutorial