python 遍历模块下py文件中的类

import os
import inspect
import importlib

from xview.tests.foundation.base_resource import BaseResource

path = os.path.dirname(os.path.abspath(__file__))
resource_mod = 'xview.tests.resources'

all_resources = list()
for f in os.listdir(path):
    if f != '__init__.py':
        file_mode = '%s.%s' % (resource_mod, os.path.splitext(f)[0])
        mode_obj = importlib.import_module(file_mode)
        classes = inspect.getmembers(mode_obj, inspect.isclass)
        for name, cls in classes:
            if cls.__base__.__name__ == BaseResource.__name__:
                all_resources.append(cls)