Это может сработать:
import re
def _callback(match):
""" This is a simple callback function for the regular expression which is
in charge of doing the actual capitalization. It is designed to only
capitalize words which aren't fully uppercased (like acronyms).
"""
word = match.group(0)
if word == word.upper():
return word
else:
return word.capitalize()
def capwords(data):
""" This function converts `data` into a capitalized version of itself. This
function accomidates acronyms.
"""
return re.sub("[\w\'\-\_]+", _callback, data)
Вот тест:
print capwords("This is an IRS test.") # Produces: "This Is An IRS Test."
print capwords("This is an I.R.S. test.") # Produces: "This Is An I.R.S. Test."