QSortFilterProxyModel用法说明
https://blog.csdn.net/kenfan1647/article/details/119768186
https://www.jb51.net/article/268710.htm
https://www.kancloud.cn/apachecn/pyqt4-doc-zh/1947063
https://blog.csdn.net/kenfan1647/article/details/119768186
https://www.jb51.net/article/268710.htm
https://www.kancloud.cn/apachecn/pyqt4-doc-zh/1947063