manage.py runserver only respects python -u flag if --noreload is present (-u flag forces streams to be unbuffered)

[Ivan]

From python help:

-u     : force the stdout and stderr streams to be unbuffered;
         this option has no effect on stdin; also PYTHONUNBUFFERED=x

Running manage.py runserver only respects python -u flag if --noreload is present, meanwhile setting the environment variable PYTHONUNBUFFERED=1 works fine.

The solution is likely to make sure subprocesses are called with the very same flag.

[Sarah Boyce]

Thank you, replicated