Activating the Flask debugger when running under mod_wsgi

Question

How can I activate the Flask debugger when running under mod_wsgi?

I have DEBUG, PROPAGATE_EXCEPTION and PRESERVE_CONTEXT_ON_EXCEPTION set to True, but still the debugger doesn't appear on exceptions.

Answer 1

As described in the Flask documentation at:

http://flask.pocoo.org/docs/quickstart/#debug-mode

use:

app.debug = True

Under mod_wsgi you aren't doing the app.run() though.

Ensure you are setting 'app.debug' at global scope and not in a conditional section where checking whether __name__ is __main__.

Answer 2

You may use interactive debugger provided by werkzeug:

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

This is earley suggested by @jd work for me.