从javascript执行python脚本

Question

I am a newbie to python. I am working on a web app and trying to call a python script from a js script. I am using ajax to call the .py script as follows but I just keep getting the code returned in the response. For simplicity, I have reduced the computation in the python script - even the variable x is not being returned to the js file.

in js function

  return $.ajax({
    type: 'GET',
    url: 'test.py',

    success: function(response) {
      console.log(response);
    },
    error: function(response) {
      return console.error(response);
    }
  });

test.py

#!/usr/bin/python

print("Hello World")

x = 2
return x

The request succeeds because it moves inside success. response is the python code instead of 2. Thanks for your help!

Answer 1

You have to use a so called application server to serve HTTP requests in Python. Look at this one or try to use some lightweight web frameworks like Flask .

The simplest web application in the Flask will look like this (in example, put it to app.py file):

from flask import Flask
app = Flask(__name__)

@app.route("/test.py")  # consider to use more elegant URL in your JS
def get_x():
    x = 2
    return x

if __name__ == "__main__":
    # here is starting of the development HTTP server
    app.run()

Then you must start your server by doing:

python app.py

By default it'll start on localhost:3000 . Hence, you have to change url in the JS code to http://localhost:3000/test.py .

UPD: Also note that the listed web servers are not production-ready. To build the production-ready configuration you can use something like uWSGI+nginx binding.