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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _process_list_value(name, parse_fn, var_type, m_dict, values, results_dictionary):
 """Update results_dictionary from a list of values. Used to update results_dictionary to be returned by parse_values when encountering a clause with a list RHS (e.g. "arr=[1,2,3]".) Mutates results_dictionary. Args: name: Name of variable in assignment ("arr"). parse_fn: Function for parsing individual values. var_type: Type of named variable. m_dict: Dictionary constructed from regex parsing. m_dict['val']: RHS value (scalar) values: Full expression being parsed results_dictionary: The dictionary being updated for return by the parsing function. Raises: ValueError: If the name has an index or the values cannot be parsed. """

  if m_dict['index'] is not None:
    raise ValueError('Assignment of a list to a list index.')
  elements = filter(None, re.split('[ ,]', m_dict['vals']))
  # Make sure the name hasn't already been assigned a value
  if name in results_dictionary:
    raise _reuse_fail(name, values)
  try:
    results_dictionary[name] = [parse_fn(e) for e in elements]
  except ValueError:
    _parse_fail(name, var_type, m_dict['vals'], values)