Python: convert camel case to space delimited using RegEx and taking Acronyms into account

Question

I am trying to convert camel case to space separated values using python. For example:

divLineColor -> div Line Color

This lin

Answer 1

\g<0> references the matched string of the whole pattern while \g<1> refereces the matched string of the first subpattern ((…)). So you should use \g<1> and \g<2> instead:

label = re.sub("([a-z])([A-Z])","\g<1> \g<2>",label)