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Currently, there is no Util class to handle errors.

Ideally, when an error happens I'd like to return something like

@app.route('/tea', methods=['GET'])
def tea():
    tea_type = request.args.get('type')
    if tea_type == "Coffee":
        return Util.error("The server refuses the attempt to brew coffee with a teapot.", 418)
    return Tea(tea_type)

Before rolling our own solution, make sure to research how other Flask based projects handle errors.