code: def enumerate_keyword_args(tokens):
      
      keyword_args = {}
      inside_function = False
      for index, tok in enumerate(tokens):
          token_type = tok[0]
          token_string = tok[1]
          if token_type == tokenize.NEWLINE:
              inside_function = False
          if token_type == tokenize.NAME:
              if token_string == "def":
                  function_name = tokens[index+1][1]
                  inside_function = function_name
                  keyword_args.update({function_name: []})
              elif inside_function:
                  if tokens[index+1][1] == '=': # keyword argument
                      keyword_args[function_name].append(token_string)
      return keyword_args
docs: Iterates over *tokens* and returns a dictionary with function names as the
      keys and lists of keyword arguments as the values.