利用NumPy计算时间（numpy.dot函数/numpy.multiply函数）

方法一、利用numpy.dot函数计算时间

import numpy as np
import time

A = np.random.rand(10000, 10000)
B = np.random.rand(10000, 10000)
 
start_time = time.time()
C = np.dot(A, B)
end_time = time.time()
print("方法1计算时间：", end_time - start_time)//3.94059681892395

方法二、利用numpy.multiply函数​计算时间

import numpy as np
import time

A = np.random.rand(10000, 10000)
B = np.random.rand(10000, 10000)

start_time = time.time()
C = np.multiply(A, B).sum()
end_time = time.time()
print("方法2计算时间：", end_time - start_time)//9.166156768798828