Auto-reloading a Flask application
The Problem
You are working on a Flask project and notice that the process of manually reloading your Flask application every time you save new changes is tedious and inefficient.
Is there a way to automatically reload your Flask application whenever you save changes to your code?
The Solution
Use the --debug option when you run your Flask app to enable debug mode.
flask --app example_app.py --debug run
This will enable auto-reload whenever changes are made to your code and saved. It will also enable an interactive debugger in the browser if any errors occur during a request.
For more information about running your Flask app, run the following command to get a list of options:
flask run --help
More Flask content
- Sentry Flask Error Monitoring (opens in a new tab)
- Community Series Identify, Trace, and Fix Endpoint Regression Issues (opens in a new tab)
- Resources Backend Error Monitoring 101 (opens in a new tab)
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Listen to the Syntax Podcast (opens in a new tab) Tasty treats for web developers brought to you by Sentry. Get tips and tricks from Wes Bos and Scott Tolinski.
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