python-3.x - 如何在 virtualenv 下在 Jetson nano 上导入 cv2？

Question

如果您没有使用 virtualenv，则 cv2 模块已成功导入

nano@nano:~$ python3
Python 3.6.7 (default, Oct 22 2018, 11:32:17) 
[GCC 8.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
>>> cv2.__version__
'3.3.1'
>>> 

但是，如果创建虚拟环境，则找不到 cv2

(env) nano@nano:~$ python3
Python 3.6.7 (default, Oct 22 2018, 11:32:17) 
[GCC 8.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'cv2'

Answer 1

更具体地说，您似乎需要将 opencv simlink 为:

首先: cd 进入 your_venv/lib/python3.6/site-packages

和:

ln -s /usr/lib/python3.6/dist-packages/cv2.cpython-36m-aarch64-linux-gnu.so cv2.cpython-36-m-aarch64-linux-gnu.so