how to not have the flask server break when an error occurs?

Question

I have made an API app using flask, that takes a number(decimal) as input and returns some string. This app breaks if I send a string and works fine after re-starting it. I don\

Answer 1

You can make a decorator that is a global exception handler:

import traceback
from flask import current_app

def set_global_exception_handler(app):
    @app.errorhandler(Exception)
    def unhandled_exception(e):
        response = dict()
        error_message = traceback.format_exc()
        app.logger.error("Caught Exception: {}".format(error_message)) #or whatever logger you use
        response["errorMessage"] = error_message
        return response, 500

And wherever you create your app instance, you need to do this:

from xxx.xxx.decorators import set_global_exception_handler
app = Flask(__name__)
set_global_exception_handler(app)

This will handle all exceptions generated in your application along with whatever else you need to do to handle them. Hope this helps.