何林的博客

import time a = np.random.randn(20000, 10000) * 100000 b = np.random.randn(20000, 10000) * 100000 for i in range(50): t1 = time.time() c = a + b t2 = time.time() d = np.add(a, b) t3 = time.time() print("+: ", t2 - t1) pri