Python Websocket Example

A simple example project for using websockets to call python functions from javascript.

Instructions

Running The Example

1. Clone the repository and open terminal in the folder
2. Run python -m pip install -r requirements.txt
3. Run python __main__.py
4. Open http://127.0.0.1:8000/ in your browser
5. Follow the instructions on the website

Defining new functions

All functions that you can call from javascript are defined in api.py.

Calling functions

If the function defined in python looks like this

def add(a, b):
    return a + b

Then it can be called in javascript like this

let resultPromise = api.add(4,5);

The result is a promise, so you should either call the function from inside an async function with await, like this:

async function myFunction() {
    const result = await api.add(4,5);
    console.log(`The result was ${result}`)
}

myFunction() 

Or by calling .then on the promise with a callback.

api.add(4,5).then(result=>console.log(`The result was ${result}`))