I'm working on a Flask project using the flask_twisted package from PyPI and have encountered a mystery. I don't *have* to solve it to move on, but darn it, I can't let it go :) https://pypi.org/project/Flask-Twisted/ https://github.com/cravler/flask-twisted/ So here's the breakdown: when use the standard logging module to output to a logfile + stdout, everything is fine. I do see some logging output from Twisted as well (the web server part) but for the most part life is groovy. I'm going to be integrating in a wxPython windows app to this (previously it's been a shell app) and step 1 was to make my own stdout handler that eventually would pipe all that stuff to a window in the wx app. The first step of THAT (step 1.a) was to replace all the logging stuff with print() placeholders. At that point, things got confusing, as now ALL of my print()s are being handled by Twisted's logging handler. I brought flask-twisted in local to my code so I could monkey around with it. First thing I noticed was that it was using twisted.python.log. I messed around with that - commented it out, and now I get no stdout output at all. Set the parameter setStdout to False, same thing. The adapter code uses twisted.internet.reactor, threads, twisted.web.server.Site, twisted.web.wsgi.WSGIResource, and twisted.web.resource.Resource, any one which might be responsible. I spent yesterday evening digging around but haven't found anything yet. Any guidance / ideas? Regards, Jeff