C:\Users\jf\AppData\Local\Programs\Python\Python311\python.exe C:\Users\jf\Desktop\素材及代码\光流法.py Traceback (most recent call last): File "C:\Users\jf\Desktop\素材及代码\光流法.py", line 25, in <module> mask = np.zeros_like(old_frame) ^^ NameError: name 'np' is not defined Process finished with exit code 1
时间: 2023-06-30 07:16:08 浏览: 36
这个错误提示是因为代码中使用了NumPy库,但是在代码中没有导入NumPy库,所以出现了NameError错误。你需要在代码开头添加以下导入语句来解决这个问题:
```python
import cv2
import numpy as np # 添加NumPy库的导入语句
```
这样就可以解决NameError错误了。
相关问题
C:\Users\Administrator\AppData\Local\Programs\Python\Python311\python.exe
C:\Users\Administrator\AppData\Local\Programs\Python\Python311\python.exe是指在C盘下的用户Administrator文件夹中,安装了Python 3.11版本的python.exe文件。根据引用所提供的信息,从Python官网下载3.11版本后,系统会自动安装Python,并将其安装在C:\Users\Administrator\AppData\Local\Programs\Python\Python311路径下。因此,C:\Users\Administrator\AppData\Local\Programs\Python\Python311\python.exe是Python 3.11的可执行文件路径。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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C:\Users\86152\AppData\Local\Programs\Python\Python39\python.exe
C:\Users\86152\AppData\Local\Programs\Python\Python39\python.exe是Python解释器的路径,可以通过在命令行中输入该路径来启动Python解释器。例如,在Windows命令提示符中输入以下命令即可启动Python解释器:
```
C:\Users\86152\AppData\Local\Programs\Python\Python39\python.exe
```
如果你想在Python解释器中运行Python代码,可以将代码保存到.py文件中,然后在命令行中使用以下命令运行该文件:
```
C:\Users\86152\AppData\Local\Programs\Python\Python39\python.exe file.py
```
其中,file.py是你要运行的Python代码所在的文件名。