[ Error message ]ImportError: libf77blas.so.3: cannot open shared object file: No such file or directory [ Solution ]- Install libatlas-base-dev$ sudo apt install libatlas-base-dev [ Python ]gangserver@raspberrypi:~/devel/pydev $ python BreamAndSmelt.pyTraceback (most recent call last): File "/home/gangserver/devel/pydev/BreamAndSmelt.py", line 35, in from sklearn.neighbors import KNeighbo..