ImportError: libcblas.so.3: cannot open shared object file: No such file or directory
What worked for me (I was missing some dependencies): pip3 install opencv-python sudo apt-get install libcblas-dev sudo apt-get install libhdf5-dev sudo apt-get install libhdf5-serial-dev sudo apt-get install libatlas-base-dev sudo apt-get install libjasper-dev sudo apt-get install libqtgui4 sudo apt-get install libqt4-test