code: def is_splitter(line):
      '''
      Returns Matcher object if provided string is a splitter and
      None otherwise.
      '''
      for pattern in SPLITTER_PATTERNS:
          matcher = re.match(pattern, line)
          if matcher:
              return matchef is_splitter(line):
      '''
      Returns Matcher object if provided string is a splitter and
      None otherwise.
      '''
      for pattern in SPLITTER_PATTERNS:
          matcher = re.match(pattern, line)
          if matcher:
              return matcher
docs: Returns Matcher object if provided string is a splitter and
      None otherwise.