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数组增加一列
48浏览 · 2023-09-05 09:07:09
增加一列可以使用numpy或pandas库中的[[函数]([http]([http](https://geek.csdn.net/educolumn/68f28ca3131d47699e5902c5d3d74d51?spm=1055.2569.3001.10083)s://geek.csdn.net/educolumn/68f28ca3131d47699e5902c5d3d74d51?spm=1055.2569.3001.10083)s://geek.csdn.net/educolumn/2319d2a62911adc34b96ea572d8225a2?spm=1055.2569.3001.10083)](https://geek.csdn.net/educolumn/ba94496e6cfa8630df5d047358ad9719?dp_token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6NDQ0MDg2MiwiZXhwIjoxNzA3MzcxOTM4LCJpYXQiOjE3MDY3NjcxMzgsInVzZXJuYW1lIjoid2VpeGluXzY4NjQ1NjQ1In0.RrTYEnMNYPC7AQdoij4SBb0kKEgHoyvF-bZOG2eGQvc&spm=1055.2569.3001.10083)实现。以下是两个简单的示例[代码](https://geek.csdn.net/educolumn/1572ef9b473b4e00f6b2bf6d428b7c27?spm=1055.2569.3001.10083)：
使用numpy库：
```python
import numpy as np
data = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
new_col = np.array([10, 11, 12])
data_with_new_col = np.column_stack((data, new_col))
print(data_with_new_col)