Python Package Cheatsheet

Web 服务：tornado

pip3 install tornado

import sys
import tornado.ioloop
import tornado.web
import json

class MainHandler(tornado.web.RequestHandler):
    def post(self):
        data = json.loads(self.request.body)
        response = {
            "status" : "failed",
            "message" : ""
        }
        try:
            response["message"] = DoSomething()
        except Exception as e:
            response["message"] = str(e)
            self.write(response)
            return
        self.write(response)

def make_app():
    return tornado.web.Application([
        (r"/", MainHandler),
    ])

if __name__ == "__main__":
    app = make_app()
    app.listen(8888)
    tornado.ioloop.IOLoop.current().start()

Matplotlib 绘制多条曲线

# importing package
import matplotlib.pyplot as plt
import numpy as np

# create data
x = [1,2,3,4,5]
y = [3,3,3,3,3]

# plot lines
plt.plot(x, y, label = "line 1")
plt.plot(y, x, label = "line 2")
plt.plot(x, np.sin(x), label = "curve 1")
plt.plot(x, np.cos(x), label = "curve 2")
plt.legend()
plt.show()

（施工中）