_builtin_types = [
type, object, bool, complex, dict, float, int, list, slice, str, tuple, set,
frozenset, Exception, type(None), types.BuiltinFunctionType, types.GeneratorType,
types.MethodType, types.CodeType, types.FrameType, types.TracebackType,
types.ModuleType, types.FunctionType,
type(int.__add__), # wrapper_descriptor
type((1).__add__), # method-wrapper
type(iter([])), # listiterator
type(iter(())), # tupleiterator
type(iter(set())), # setiterator
]