Python每日一练（2025.4.21）

import timestart = time.time()time.sleep(1)end = time.time()print(int(end - start))

import threadingdef task():    print("Hello")thread = threading.Thread(target=task)thread.start()

from multiprocessing import Processdef task():    print("Hello")p = Process(target=task)p.start()

import numpy as npx = np.array([1, 2, 3])print(x.sum())