降低matplotlib版本至2.2.2
pip3 install matplotlib==2.2.2
出现新的问题,ImportError: Matplotlib qt-based backends require an external PyQt4, PyQt5,PySide or PySide2 package to be installed, but it was not found.
解决方法:安装PyQt5
pip3 install PyQt5
安装后仍出现2中的问题,应该是缺少PySide
解决方法,安装PySide
pip3 install PySide2