安装opencv import cv2时 出现libcblas.so.3:cannot open shared object file:NO such file or directory

一、安装opencv-python

pip install -i  https://pypi.douban.com/simple/  opencv-python==4.5.4.60

 二、导入cv2 测试   import cv2 如下图错误情况出现  ，libcblas.so.3:cannot open shared object file:NO such file or directory

三、安装Blas 的依赖项

sudo apt-get install libatlas-base-dev

 再次imort cv2 ,出现下图错误，

 四、升级下numpy

pip install numpy --upgrade

 五、再次测试，OK