Python String upper()

Summary: in this tutorial, you’ll learn how to use the Python String upper() method to return a copy of a string with all characters converted to uppercase.

Introduction to the Python String upper() method

The upper() is a string method that allows you to return a copy of a string with all characters converted to uppercase.

The following shows the syntax of the upper() method:

str.upper()Code language: Python (python)

The upper() method takes no argument.

Note that the upper() method doesn’t change the original string.

To return a copy of a string with all characters converted to lowercase, you use the str.lower() method.

Python String upper() method example

The following example uses the upper() method to return a copy of a string with all characters converted to uppercase:

s = 'python uppercase'
new_s = s.upper()

print(s)
print(new_s)Code language: Python (python)

Output:

python uppercase
PYTHON UPPERCASECode language: Python (python)

Summary

• Use the Python string upper() method to return a copy of a string with all characters converted to uppercase.