python安装完matplotlib 报错

报错内容：

Traceback (most recent call last):
  File ".\matplotlib222.py", line 1, in <module>
    import matplotlib.pyplot as plt
  File "D:\Program Files (x86)\python\lib\site-packages\matplotlib\__init__.py", line 107, in <module>
    from . import cbook, rcsetup
  File "D:\Program Files (x86)\python\lib\site-packages\matplotlib\rcsetup.py", line 28, in <module>
    from matplotlib.fontconfig_pattern import parse_fontconfig_pattern
  File "D:\Program Files (x86)\python\lib\site-packages\matplotli

解决办法：

pyparsing库版本有问题

可以用 pip list 查看pyparsing版本

可以更换为其他版本，我更换版本为：2.4.7

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pyparsing==2.4.7

重新运行不报错了