from wsgiref.simple_server import make_server

def index():

return b'index page', '200 OK', [('Content-Type', 'text/html')]

def api():

return b'{"name": "Aiden", "email": "luojin@simplecloud.cn"}', '201 Created', [('Content-Type', 'application/json')]

def not_found():

return b'404 page', '404 NOT FOUND', [('Content-Type', 'text/plain')]

URL_PATTERNS= (

('/', index),

('api', api),

('course', not_found)

)

class Flask:

def route(self, path):

path = path.split('/')[1]

for url, controller in URL_PATTERNS:

if path in url:

return controller

def __call__(self, environ, start_response):

path = environ.get('PATH_INFO','/')

controller = self.route(path)

if controller :

body, status, headers = controller()

start_response(status, headers)

return [body]

else:

start_response('404 NOT FOUND',[('Content-type', 'text/plain')])

return [b'Page dose not exists!']

if __name__ == '__main__':

app = Flask()

httpd = make_server('', 8091, app)

print('Serving on port 8091...')

httpd.serve_forever()