Python .upper()

The .upper() method takes a string and returns a copy of that string in which all letters are uppercase. Numbers and symbols are not changed.

Note: The .upper() method does not change the string it is used on.

Syntax

string.upper()

Example

The following example shows how .upper() returns a string with all its letters in uppercase. It also shows that the original string remains unchanged:

my_string = "shout"

print(my_string)
print(my_string.upper())
print(my_string)

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This would output:

shout
SHOUT
shout

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Codebyte Example

The following example shows how the .upper() method can be used to compare strings:

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