all Python 3Strings (str)function

str.upper

case

Return a copy with all cased characters converted to uppercase.

Syntax

s.upper()

The result is not guaranteed to have the same length as the input: ß expands to two characters, SS, so indices computed on the uppercased text no longer line up with the original. upper() and lower() are not inverses either — s.upper().lower() can differ from s — so use casefold() when you need a caseless comparison.

Examples

print('Hello'.upper())     # → HELLO
print('привет'.upper())    # → ПРИВЕТ
print('straße'.upper())    # → STRASSE

See also

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