example of checking whether you're inside of a uWSGI pre-fork worker

main.py

try:
    import uwsgi

    is_using_uwsgi = True
except ImportError:
    is_using_uwsgi = False
    
    
def is_uwsgi_prefork():
    """Checks if code is currently being executed within a uWSGI pre-fork worker."""
    if is_using_uwsgi:
        if uwsgi.numproc > 1 and uwsgi.worker_id() == 0:
            return True

    return False
    

if is_uwsgi_prefork():
    raise RuntimeError(
        'Unable to initalize Launch Darkly client in a uWSGI pre-fork worker.'
        ' This causes issues with the threads used to check for flag updates.'
    )