给出一种方案: python == 3.7.15 tensorflow == 2.2.0 keras == 2.3.0 numpy == 1…16.4 matplotlib == 2.2.4
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple matplotlib==2.2.3 即另外设置源
matplotlib版本降至2.2.4即可