I am install python 3.8.0v and run pip install opencv-python its give me error. ERROR: Could not find a version that satisfies the requirement ... ... <看更多>

(_test_opcv) travis@travis-job:~/$ pip install --upgrade pip && pip install opencv-python Cache entry deserialization failed, entry ignored ... ... <看更多>

Solved it using sudo apt-get install python-opencv. ... <看更多>