Numpy failure (Prereq Related)

[tifoji]

Ran into this after "python dashboard.py"

Traceback (most recent call last):
  File "/home/pi/.local/lib/python3.7/site-packages/numpy/core/__init__.py", line 22, in <module>
    from . import multiarray
  File "/home/pi/.local/lib/python3.7/site-packages/numpy/core/multiarray.py", line 12, in <module>
    from . import overrides
  File "/home/pi/.local/lib/python3.7/site-packages/numpy/core/overrides.py", line 7, in <module>
    from numpy.core._multiarray_umath import (
ImportError: libf77blas.so.3: cannot open shared object file: No such file or directory
.....................
Please note and check the following:

  * The Python version is: Python3.7 from "/usr/bin/python"
  * The NumPy version is: "1.19.1"

and make sure that they are the versions you expect.
Please carefully study the documentation linked above for further help.

Original error was: libf77blas.so.3: cannot open shared object file: No such file or directory

This error happens even if the pre-reqs are met

pi@raspberrypi:~/tos/tos_options_dashboard $ python -V
Python 3.7.3
pi@raspberrypi:~/tos/tos_options_dashboard $ which python
/usr/bin/python
pi@raspberrypi:~/tos/tos_options_dashboard $ pip list|grep -i numpy
numpy                     1.19.1

This is apparently due to Numpy 14772 the root cause is explained within. Anyways the solution works in case anyone else runs into the same issue

sudo apt-get install libatlas-base-dev

[bernardcheng]

Closing this issue since the solution has been provided. If not, please provide more more information.