Libcblas appears when installing opencv import CV2 so. 3:cannot open shared object file:NO such file or directory

One 、 install opencv-python

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

  Two 、 Import cv2 test    import cv2 As shown in the figure below, the error occurs   ,libcblas.so.3:cannot open shared object file:NO such file or directory

 

3、 ... and 、 install Blas The dependencies of

sudo apt-get install libatlas-base-dev

  Again imort cv2 , The following error appears ,

  Four 、 Upgrade next numpy

pip install numpy --upgrade

  5、 ... and 、 The test again ,OK