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

If you have acronyms, you probably do not want spaces between them. This two-stage regex will keep acronyms intact (and also treat punctuation and other non-uppercase letters as something to add a space on):

re_outer = re.compile(r'([^A-Z ])([A-Z])')
re_inner = re.compile(r'(?

The output will be: 'Dave Is AFK Right Now! Cool'