A pythonic way to insert a space before capital letters

Question

I\'ve got a file whose format I\'m altering via a python script. I have several camel cased strings in this file where I just want to insert a single space before the capital l

Answer 1

Perhaps shorter:

>>> re.sub(r"\B([A-Z])", r" \1", "DoIThinkThisIsABetterAnswer?")