code: def xformers(sig):
      
      return \
         [(_wrapper(f), l) for (f, l) in \
         _XFORMER.PARSER.parseString(sig, parseAll=True)]
docs: Get the list of xformer functions for the given signature.
  
      :param str sig: a signature
      :returns: a list of xformer functions for the given signature.
      :rtype: list of tuple of a function * str
  
      Each function catches all TypeErrors it encounters and raises
      corresponding IntoDPValueError exceptions.