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Python编程:ndarray数组的保存与读取


代码示例

# -*- coding: utf-8 -*-

import numpy as np

matrix = np.arange(12).reshape(4, -1)
print(matrix)
"""
[[ 0 1 2]
[ 3 4 5]
[ 6 7 8]
[ 9 10 11]]
"""

# 保存二维数组
np.savetxt("matrix.txt", matrix, fmt="%d", delimiter=",")

# 读取二维数组
m = np.loadtxt("matrix.txt", dtype=int, delimiter=",")
print(m)
"""
[[ 0 1 2]
[ 3 4 5]
[ 6 7 8]
[ 9 10 11]]
"""


参考
​​python如何保存矩阵,保存matrix,保存numpy.ndarray​​




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