<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def is_cython_or_generator(fn):
 """Returns whether this function is either a generator function or a Cythonized function."""

    if hasattr(fn, "__func__"):
        fn = fn.__func__  # Class method, static method
    if inspect.isgeneratorfunction(fn):
        return True
    name = type(fn).__name__
    return (
        name == "generator"
        or name == "method_descriptor"
        or name == "cython_function_or_method"
        or name == "builtin_function_or_method"
    )