问题描述：

在VScode运行代码时，出现如下提示：

This application failed to start because it could not find or load the Qt platform plugin “windows” in “”.
Available platform plugins are: direct2d.
Reinstalling the application may fix this problem.**

This application failed to start because it could not find or load the Qt platform plugin "windows"
in "".

Available platform plugins are: direct2d.

Reinstalling the application may fix this problem.
     
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原因分析：

代码中并未使用QT，但问题提示指向QT

经查阅Google，发现问题是matplotlib的显示窗口被占有，与QT发生冲突造成代码bug。

解决方案：

在代码顶部添加下面两行：

import matplotlib
matplotlib.use('TKAgg')
     
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