When you already have an older version of NumPy, use this:
pip install numpy –upgrade
If it still doesn’t work, try:
pip install numpy –upgrade –ignore-installed
Because we have two NumPy installations in the system. One is installed by Homebrew and the second is installed by pip. So in order to solve the problem, we need to delete one and use the default NumPy install by OpenCV.
Check the path,
import numpy
print numpy.__path__
and manually delete it using rm.