Making letters uppercase using re.sub in python?

Question

In many programming languages, the following

find foo([a-z]+)bar and replace with GOO\\U\\1GAR

will result in the entire match bei

Answer 1

For those coming across this on google...

You can also use re.sub to match repeating patterns. For example, you can convert a string with spaces to camelCase:

def to_camelcase(string):
  string = string[0].lower() + string[1:]  # lowercase first
  return re.sub(
    r'[\s]+(?P[a-z])',              # match spaces followed by \w
    lambda m: m.group('first').upper(),    # get following \w and upper()
    string) 

to_camelcase('String to convert')          # --> stringToConvert