Function _wait_for_interp_to_run

Lib/test/test__interpreters.py:40–50

(interp, timeout=None)

def _wait_for_interp_to_run(interp, timeout=None):
    # bpo-37224: Running this test file in multiprocesses will fail randomly.
    # The failure reason is that the thread can't acquire the cpu to
    # run subinterpreter earlier than the main thread in multiprocess.
    if timeout is None:
        timeout = support.SHORT_TIMEOUT
    for _ in support.sleeping_retry(timeout, error=False):
        if _interpreters.is_running(interp):
            break
    else:
        raise RuntimeError('interp is not running')


@contextlib.contextmanager