New submission from Muhammad Tauqir Ahmad: If a method `foo` of object instance `obj` is injected into it using a method from a different object instance, `inspect.getsource(obj.foo)` fails with the error message:
TypeError: <bound method Foo.say of <__main__.Foo object at 0x7fd348662cd0>> is not a module, class, method, function, traceback, frame, or code object in inspect.py:getfile() What basically is happening is that if you have `obj1`, `obj2` and `obj2` has method `foo`, setting `obj1.foo = types.MethodType(obj2.foo, obj1)` succeeds but is "double-bound-method" if that's a term. So during `getsource()`, it fails because `obj1.foo.__func__` is a method not a function as is expected. Possible solutions: 1. Error message should be more clear if this is the intended behavior - right now it claims it's not a method,function etc. when it is indeed a method. 2. MethodType() should fail if the first argument is not a function. 3. inspect.getsource() should recursively keep "unpacking" till it finds an object that it can get the source for. Reproducer attached. ---------- components: Library (Lib) files: reproducer.py messages: 205942 nosy: mtahmed priority: normal severity: normal status: open title: inspect.getsource(obj.foo) fails when foo is an injected method constructed from another method type: behavior versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3 Added file: http://bugs.python.org/file33098/reproducer.py _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue19956> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
