import cv2 で謎の"ImportError"が出た...[OpenCV for Python3]

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Python3で"ImportError: numpy.core.multiarray failed to import"が出たら

解決策は、numpyをアップグレードすればいい。

ターミナル

pip install -U numpy

それでもダメなら、pipをアップグレードした後で、
もう一度、numpyをアップグレードしてみる。

pip install --upgrade pip
pip install numpy --upgrade
# or
pip install -U numpy

なお、それでもダメならば、再インストールすればいい。

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