所以这个代码：
from inspect import *
class X(object):
def y(self):
pass
methods = getmembers(X, predicate=ismethod)
functions = getmembers(X, predicate=isfunction)
print("%r" % methods)
print("%r" % functions)
从python2.7得出：
[('y', <unbound method X.y>)]
[]
从python3.3得出：
[]
[('y', <function X.y at 0x1006ee3b0>)]
我已经摸索过了，但我看不出这种行为改变的任何明显原因。
具体来说，为什么python 3把我的方法当作一个函数来处理？
是否有任何跨运行时的方法来获取类上的方法列表？
（例如，在python2.x和3.x上运行时返回相同的值）
编辑：getmembers（）不工作的示例：
from inspect import *
class X(object):
def y(self):
pass
methods = getmembers(X)
for i in methods:
if ismethod(i):
print("Method: %s" % str(i))
else:
print("Not a method: %s" % str(i))
印刷品：
Not a method: ('__class__', <attribute '__class__' of 'object' objects>)
Not a method: ('__delattr__', <slot wrapper '__delattr__' of 'object' objects>)
Not a method: ('__dict__', <attribute '__dict__' of 'X' objects>)
Not a method: ('__dir__', <method '__dir__' of 'object' objects>)
Not a method: ('__doc__', None)
Not a method: ('__eq__', <slot wrapper '__eq__' of 'object' objects>)
Not a method: ('__format__', <method '__format__' of 'object' objects>)
Not a method: ('__ge__', <slot wrapper '__ge__' of 'object' objects>)
Not a method: ('__getattribute__', <slot wrapper '__getattribute__' of 'object' objects>)
Not a method: ('__gt__', <slot wrapper '__gt__' of 'object' objects>)
Not a method: ('__hash__', <slot wrapper '__hash__' of 'object' objects>)
Not a method: ('__init__', <slot wrapper '__init__' of 'object' objects>)
Not a method: ('__le__', <slot wrapper '__le__' of 'object' objects>)
Not a method: ('__lt__', <slot wrapper '__lt__' of 'object' objects>)
Not a method: ('__module__', '__main__')
Not a method: ('__ne__', <slot wrapper '__ne__' of 'object' objects>)
Not a method: ('__new__', <built-in method __new__ of type object at 0x1001e0640>)
Not a method: ('__reduce__', <method '__reduce__' of 'object' objects>)
Not a method: ('__reduce_ex__', <method '__reduce_ex__' of 'object' objects>)
Not a method: ('__repr__', <slot wrapper '__repr__' of 'object' objects>)
Not a method: ('__setattr__', <slot wrapper '__setattr__' of 'object' objects>)
Not a method: ('__sizeof__', <method '__sizeof__' of 'object' objects>)
Not a method: ('__str__', <slot wrapper '__str__' of 'object' objects>)
Not a method: ('__subclasshook__', <method '__subclasshook__' of 'object' objects>)
Not a method: ('__weakref__', <attribute '__weakref__' of 'X' objects>)
Not a method: ('y', <function X.y at 0x1006ee3b0>)
最佳答案
与inspect没有特别区别，但通常与python 3有区别，请参见here
“未绑定方法”的概念已从语言中删除。当将一个方法作为类属性引用时，您现在得到一个纯函数对象。
我对跨平台的建议是：
getmembers(X, predicate=lambda x: isfunction(x) or ismethod(x))