相关疑难解决方法(0)

无论如何要做这样的事情:

class A:
    def foo(self):
        if isinstance(caller, B):
           print "B can't call methods in A"
        else:
           print "Foobar"
class B:
    def foo(self, ref): ref.foo()

class C:
    def foo(self, ref): ref.foo()


a = A();
B().foo(a)    # Outputs "B can't call methods in A"
C().foo(a)    # Outputs "Foobar"

调用者在哪里A使用某种形式的内省来确定调用方法对象的类？

编辑:

最后,我根据一些建议把它放在一起:

import inspect
...
def check_caller(self, klass):
    frame = inspect.currentframe()
    current = lambda : frame.f_locals.get('self')
    while not current() is None:
        if isinstance(current(), klass): return True
        frame = frame.f_back …