python动态加载模块，并获取模块中的类与方法(类似反射)

 

temp.py:

def func():
    print('func is called.')

class A:
    def __init__(self,name='A'):
        self.name=name

    def _say(self,msg):
        print(msg)

    def sayhello(self):
        print('hello,i am {}'.format(self.name))


class B:
    def __init__(self,name='B'):
        self.name=name

    def _do_work(self):
        print('Do some work.')

    def greet(self):
        print('hello,i am {}'.format(self.name))

test.py:

import inspect

def get_attrs_of_module(module_name='temp'):
    module=__import__(module_name)#动态引入模块(temp.py文件)
    #用inspect.getmembers获取模块中的类
    classes=[clsname for (clsname,fullname) in inspect.getmembers(module,inspect.isclass)]

    dic_cls_methods={}
    for clsname in classes:
        #用python内置的getattr()方法获取模块的类，inspect.isfunction()方法过滤出该类的方法
        methods=[method_name for (method_name,method) in inspect.getmembers(getattr(module,clsname),inspect.isfunction)]
        dic_cls_methods[clsname]=methods
    print(dic_cls_methods)

输出：

{'A': ['__init__', '_say', 'sayhello'], 'B': ['__init__', '_do_work', 'greet']}