python list to np array
时间: 2023-09-21 07:09:22 浏览: 75
To convert a Python list to a NumPy array, you can use the `np.array()` function from the NumPy library. Here's an example:
```python
import numpy as np
my_list = [1, 2, 3, 4, 5]
my_array = np.array(my_list)
print(my_array)
```
This code will create a NumPy array `my_array` from the Python list `my_list`. You can then perform various operations on the NumPy array using the functionalities provided by the NumPy library.
相关问题
python np array 转list
要将numpy数组转换为list,可以使用tolist()方法。例如,如果有一个名为arr的numpy数组,可以使用arr.tolist()将其转换为list。\[1\]这样做可以方便地在numpy数组和list之间进行数据类型的转换。
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[ .reference_list ]
python将list转为np.array
要将一个list转换为np.array,需要使用numpy库中的array函数。下面是一个例子:
```python
import numpy as np
my_list = [1, 2, 3, 4, 5]
my_array = np.array(my_list)
print(my_array)
```
输出:
```
[1 2 3 4 5]
```
如果list中含有多个嵌套的子列表,可以使用多维数组来表示。例如:
```python
my_list = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
my_array = np.array(my_list)
print(my_array)
```
输出:
```
[[1 2 3]
[4 5 6]
[7 8 9]]
```
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