如何重塑numpy数组以将行转换为列

import numpy as np

# 创建一个2x3的数组
arr = np.array([[1, 2, 3], [4, 5, 6]])

# 使用reshape将行转换为列，形状变为3x2
reshaped_arr = arr.reshape(3, 2)
print("Reshaped Array:\n", reshaped_arr)

import numpy as np

# 创建一个2x3的数组
arr = np.array([[1, 2, 3], [4, 5, 6]])

# 使用transpose将行转换为列
transposed_arr = arr.transpose()
print("Transposed Array:\n", transposed_arr)

# 错误的形状
try:
    wrong_reshape = arr.reshape(4, 2)
except ValueError as e:
    print("Error:", e)

# 正确的做法
correct_reshape = arr.reshape(-1, 2)  # NumPy会自动计算第一个维度为3
print("Correct Reshape:\n", correct_reshape)