废话不多说，直接上代码吧！
# 矩阵操作
# 将矩阵拉成向量
import numpy as np
x = np.arange(10).reshape(2,5)
print(x)
y1 = x.ravel()
y2 = x.flatten()
print("y1: ",y1," y2: ",y2)
print(x)
"""
打印结果：
[[0 1 2 3 4]
[5 6 7 8 9]]
y1: [0 1 2 3 4 5 6 7 8 9] y2: [0 1 2 3 4 5 6 7 8 9]
[[0 1 2 3 4]
[5 6 7 8 9]]
"""