pure_interface.py 文件源码

def _ensure_everything_is_abstract(attributes):
    # all methods and properties are abstract on a pure interface
    namespace = {}
    functions = []
    interface_method_signatures = {}
    interface_property_names = set()
    for name, value in six.iteritems(attributes):
        if _builtin_attrs(name):
            pass  # shortcut
        elif getattr(value, '__isabstractmethod__', False):
            if isinstance(value, (staticmethod, classmethod, types.FunctionType)):
                if isinstance(value, (staticmethod, classmethod)):
                    func = value.__func__
                else:
                    func = value
                functions.append(func)
                interface_method_signatures[name] = _get_function_signature(func)
            elif isinstance(value, property):
                interface_property_names.add(name)
        elif isinstance(value, staticmethod):
            func = value.__func__
            functions.append(func)
            interface_method_signatures[name] = _get_function_signature(func)
            value = abstractstaticmethod(func)
        elif isinstance(value, classmethod):
            func = value.__func__
            interface_method_signatures[name] = _get_function_signature(func)
            functions.append(func)
            value = abstractclassmethod(func)
        elif isinstance(value, types.FunctionType):
            functions.append(value)
            interface_method_signatures[name] = _get_function_signature(value)
            value = abstractmethod(value)
        elif isinstance(value, property):
            interface_property_names.add(name)
            functions.extend([value.fget, value.fset, value.fdel])  # may contain Nones
            value = abstractproperty(value.fget, value.fset, value.fdel)
        namespace[name] = value
    return namespace, functions, interface_method_signatures, interface_property_names