snake.py 文件源码

def unload_extension(self, extension_name): # horrible hacks to make cogs work with single process sharding
        for shard in self.shards.values():
            if not extension_name in shard.extensions.keys():
                continue

            ext_lib = shard.extensions[extension_name]

            # print("removing cogs")
            for cog_name, cog in shard.cogs.copy().items():
                if get_module(cog) is ext_lib:
                    shard.remove_cog(cog_name)

            # print("removing commands")
            for command in shard.commands.copy().values():
                if command.module is ext_lib:
                    command.module = None
                    if isinstance(command, commands.GroupMixin):
                        command.recursively_remove_all_commands()

                    shard.remove_command(command.name)

            # print("removing events")
            for event_list in shard.extra_events.copy().values():
                remove = []
                for idx, event in enumerate(event_list):
                    if get_module(event) is ext_lib:
                        remove.append(idx)

                for idx in reversed(remove):
                    del event_list[idx]

            # print("tearing down")
            try:
                teardown_func = getattr(ext_lib, "teardown")
            except AttributeError:
                pass
            else:
                try:
                    func(shard)
                except:
                    pass
            finally:
                del shard.extensions[extension_name]

        del self.extensions[extension_name]
        del sys.modules[extension_name]
        # print("finished")