解决 ImportError: numpy.core.multiarray failed to import

强制卸载忽略之前已安装的版本：
pip install kiwisolver --ignore-installed kiwisolver
之后碰到：ImportError: cannot import name ‘_validate_lengths’ ，这里是因为numpy版本过高，重新安装就好了，这里选择
pip install numpy==1.15.0

Talk is cheap. Show me the code