Hey folks, One of my users spotted this, and I think it is an error in BP. It works the same for any function exported. He states it more completely then I could, So I will just forward what he sent to me:
From: Ben Walker (TT) Sent: Friday, January 29, 2010 3:27 PM To: Matthew Scouten (TT) Subject: Boost.Python.function bug >>> boost_func <Boost.Python.function object at 0x011A0228> >>> type(boost_func) <type 'Boost.Python.function'> >>> import types >>> isinstance(boost_func, types.BuiltinFunctionType) True >>> dir(boost_func) ['__call__', '__class__', '__cmp__', '__delattr__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__le__', '__lt__', '__module__', '__name__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__self__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__'] >>> boost_func.__self__ Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'Boost.Python.function' object has no attribute '__self__' >>> hasattr(boost_func, '__self__') False >>> dir() says Boost.Python.function objects have a __self__ member, but accessing it throws an AttributeError. Furthermore, real builtin functions have a __self__ member and some python libraries assume that if something is an instance of a builtin function, it will have a __self__ member. Testing via hasattr does function appropriately for the actual behavior. This was discovered while trying to use Sphinx's autodoc extension (sphinx.pocoo.org) on a C++ library wrapped via Boost.Python.
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