====== QTree ======
===== 初始化 =====
<code python>
self.tree = QTreeWidget()
self.tree.setColumnCount(5)
self.tree.setHeaderLabels(['基金代码','基金名称','买入金额','预估涨幅','预估时间'])

</code>


===== 树型文件夹浏览 =====

<code python>
#window系统提供的模式
model=QDirModel()
#创建一个QTreeView的控件
tree=QTreeView()
#为控件添加模式
tree.setModel(model)
</code>

====== 项目颜色设置 ======
<code python>
setStyleSheet("QTreeView::branch::hover{background-color:red;} QTreeView::item::hover{background-color:red;} QTreeView::branch::selected{background-color:green;} QTreeView::item::selected{background-color:green;} ");
</code>