I can't speak to your Waitress questions, but uwsgi will build on windows with cygwin and can run multiple processes with single threads.
On Thursday, May 22, 2025 at 4:48:06 PM UTC-4 Tom Hendrikx wrote: > Hi, > > For a work project I'm building Python software that runs inside a rather > limited environment. An upstream software supplier provides software that > spawns a Python environment where I need to execute code that is not > thread-safe. The upstream supplier did add some mechanics to allow thread > safety, but it requires me to call some custom code from each newly spawned > thread. > > The actual functionality that I need to run in the environment is a small > Flask app. When running this app using the Flask builtin dev server, it > only works when I disable threads using: flask_app.run(threaded=False). > > Now I wanted to not use the Flask dev server but something a little more > sophisticated. Enter waitress: it runs on Windows (hard requirement), it's > simple and it can serve my Flask app directly from Python (no external > servers like apache+mod_wsgi required). There is only a single client > sending requests to the server, so performance/concurrency is not a > requirement. > > However, I cannot get waitress to run as a single thread. Settings > threads=1 doesn't help (it's probably the master process + 1 task thread). > I found a SO post [1] that suggests two options, but both don't work: > setting the parameter "threaded" to False, but this parameter doesn't exist > (in waitress 3.0.2), and setting "connection_limit" to 1, which renders the > app unreachable. > > Running threaded would probably mean that I subclass > the ThreadedTaskDispatcher to add the specific code from the supplier. > Another option would be to create a non-threading Dispatcher myself from > scratch, and use that. All that seems way too complicated. > > Do you have advice for me? Can I even run waitress without threads? Where > did the "threaded" parameter to the serve() function go, if it ever > existed? Should I be looking at a different Python-only app server that I > somehow didn't find in my searches, and works on Windows? Should I even > bother and just use the Flask dev server? > > [1] https://stackoverflow.com/a/78515009/2991260 > > Thanks for all knowledge you might be able to share > > Kind regards, > Tom > -- You received this message because you are subscribed to the Google Groups "pylons-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/pylons-discuss/f1d3abc3-0f31-41b7-84dc-0febcf191228n%40googlegroups.com.
