def _is_dunder(name):
return (name[:<NUM_LIT:2>] == name[-<NUM_LIT:2>:] == '<STR_LIT>' and<EOL>name[<NUM_LIT:2>:<NUM_LIT:3>] != '<STR_LIT:_>' and<EOL>name[-<NUM_LIT:3>:-<NUM_LIT:2>] != '<STR_LIT:_>' and<EOL>len(name) > <NUM_LIT:4>)<EOL>
Returns True if a __dunder__ name, False otherwise.