Context Manager Custom

from contextlib import contextmanager
from time import perf_counter

@contextmanager
def timed(label: str):
    start = perf_counter()
    try:
        yield
    finally:
        print(label, round(perf_counter() - start, 4), 's')

with timed('work'):
    total = sum(i*i for i in range(100000))
print(total > 0)