python内置函数原理？

Question

当我阅读python源代码时，我发现了内置函数，如

class staticmethod(object):
    """
    ....
    """
    def __getattribute__(self, name): # real signature unknown; restored from __doc__
        """ x.__getattribute__('name') <==> x.name """
        pass

    def __get__(self, obj, type=None): # real signature unknown; restored from __doc__
        """ descr.__get__(obj[, type]) -> value """
        pass

    def __init__(self, function): # real signature unknown; restored from __doc__
        pass

    @staticmethod # known case of __new__
    def __new__(S, *more): # real signature unknown; restored from __doc__
        """ T.__new__(S, ...) -> a new object with type S, a subtype of T """
        pass

    __func__ = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default

我的问题是空方法是什么？为什么要写在这里？

Answer 1

Python的一些（可能是大多数）内置函数是用C语言编写的，因此没有Python实现。