Debugging UWSGI and Flask

Quick notes on UWSGI debugging, because I keep forgetting.

Debugging

FLASK_DEBUG does not work for UWSGI apps. You’ll need the following code in your Flask app, courtesy StackOverflow:

from werkzeug.debug import DebuggedApplication
app.wsgi_app = DebuggedApplication(app.wsgi_app, True)

To activate it, it’s probably easiest to pass an environment variable. For example, in your UWSGI configuration:

env=APP_DEBUG=1

and then in the app:

if 'APP_DEBUG' in os.environ:
    app.debug = True
    from werkzeug.debug import DebuggedApplication
    app.wsgi_app = DebuggedApplication(app.wsgi_app, True)

Reloading

To enable hot-reloading of modified files, just set:

py-autoreload=5

to check for modified files every 5 seconds and reload them as necessary.

Discussion

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