Am 22.02.2013 10:35, schrieb Wolfgang Maier: > Also: can you use introspection to find out whether a type is valid as a > base type?
I don't think so. For CPython the information is stored in the type's structure. When type->tp_flags & Py_TPFLAGS_BASETYPE is true then subclassing is allowed. But I know of no way to retrieve that information from Python code. -- http://mail.python.org/mailman/listinfo/python-list
