基于WSGI封装一个简单WEB框架

from wsgiref.simple_server import make_serverdef index():    return  ‘index‘def login():    return  ‘login‘def routes():    urlpatterns=(        (‘/index‘,index),        (‘/login‘,login),    )    return urlpatternsdef runserver(environ,start_response):    start_response(‘200 OK‘ , [(‘Content-Type‘,‘text/html‘)])    url = environ[‘PATH_INFO‘]    urlpatterns = routes()    func = None    for item in urlpatterns:        print (item)        if item[0] == url:            func=item[1]            break    if func:         a=func()         return  a    else:       return ‘hhhhh404 404‘if __name__ == ‘__main__‘:    httpd= make_server(‘192.168.6.163‘,8000,runserver)    print (‘start web server‘)    httpd.serve_forever()