Скачать или смотреть Understanding the URL not found Error in Your Flask App

Understanding the URL not found Error in Your Flask App

The "URL not found" error in a Flask application, commonly displayed as a 404 error, signifies that the requested route does not have a corresponding view function defined. This arises when the URL entered in the browser, or generated by a link, doesn't match any of the routes specified using the `@app.route()` decorator in your Flask application. To resolve this, meticulously check for typos in the URL within both your code and the browser. Ensure that the route defined in your Python code matches the exact URL being requested. Debugging often involves inspecting the routing definitions and verifying that the intended view function is correctly associated with the problematic URL, confirming the HTTP method (GET, POST, etc.) matches and that all variable parts of URL are correctly passed as arguments.

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