Function timed

tests/test_support/runtime.py:710–724

Context manager that prints the wall-clock duration of a labelled phase. Usage:: with timed("model load"): model = load_model(...)

(label: str)

@contextlib.contextmanager
def timed(label: str):
    """Context manager that prints the wall-clock duration of a labelled phase.

    Usage::

        with timed("model load"):
            model = load_model(...)
    """
    print(f"[timing] {label} — starting", flush=True)
    t0 = time.perf_counter()
    try:
        yield
    finally:
        elapsed = time.perf_counter() - t0
        print(f"[timing] {label} — done in {elapsed:.1f}s", flush=True)