def _wrap_string_slot(string):
    "Converts __slots__ = 'a' into __slots__ = ('a',)"
    if isinstance(string, string_types):
        return (string,)
    return string
Converts __slots__ = 'a' into __slots__ = ('a',)
def _wrap_string_slot(string):
    
    if isinstance(string, string_types):
        return (string,)
    return string