how to make an alexa skill with python code example

Example: Alexa skill development using python tutorial

171sb = SkillBuilder()
172
173sb.add_request_handler(LaunchRequestHandler())
174sb.add_request_handler(JokeIntentHandler())
175sb.add_request_handler(HelloWorldIntentHandler())
176sb.add_request_handler(HelpIntentHandler())
177sb.add_request_handler(CancelOrStopIntentHandler())
178sb.add_request_handler(SessionEndedRequestHandler())
179
180# Make sure IntentReflectorHandler is last so it
181# Doesn't override your custom intent handlers
182sb.add_request_handler(IntentReflectorHandler())
183
184sb.add_exception_handler(CatchAllExceptionHandler())
185
186...