Question

Example:

HILO -> Hilo
new york -> New York
SAN FRANCISCO -> San Francisco

Is there a library or standard way to perform this task?

Answer 1

Why not use title Right from the docs:

>>> "they're bill's friends from the UK".title()
"They'Re Bill'S Friends From The Uk"

If you really wanted PascalCase you can use this:

>>> ''.join(x for x in 'make IT pascal CaSe'.title() if not x.isspace())
'MakeItPascalCase'