[Python] Object Oriented Python with Flask Server?

Discussão em 'Python' iniciado por Stack, Março 27, 2025.

  1. Stack

    Stack Membro Participativo

    I'm using Flask to expose some data-crunching code as a web service. I'd like to have some class variables that my Flask functions can access.

    Let me walk you through where I'm stuck:

    from flask import Flask
    app = Flask(__name__)

    class MyServer:
    def __init__(self):
    globalData = json.load(filename)

    @app.route('/getSomeData')
    def getSomeData():
    return random.choice(globalData) #select some random data to return

    if __name__ == "__main__":
    app.run(host='0.0.0.0')


    When I run getSomeData() outside of Flask, it works fine. But, when I run this with Flask, I get 500 internal server error. There's no magic here, and Flask has no idea that it's supposed to initialize a MyServer object. How can I feed an instance of MyServer to the app.run() command?

    I could admit defeat and put globalData into a database instead. But, is there an other way?

    Continue reading...

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