code: def find_this(search, source=SOURCE):
      
      print("Searching for {what}.".format(what=search))
      if not search or not source:
          print("Not found on source: {what}.".format(what=search))
          return ""
      return str(re.compile(r'.*__{what}__ = "(.*?)"'.format(
          what=search), re.S).match(source).group(1)).strip()
docs: Take a string and a filename path string and return the found value.