Flask Is Not Printing Sys.stdout.write Messages

I am running the flask app from this link using the command python app.py. More logs printed using, sys.stdout.write are not printed on the console. However using logging.StreamHa

Solution 1:

afaik flasks app.run() uses the gunicorn web package

I believe gunicorn is the one that is actually redirecting your output

the output might be in /var/log/gunicorn/error.log (not sure where it would be on windows :/)

or its possible sys.stdout is just not flushing its buffer, try sys.stdout.flush() after writting to it