Create a tree and expand its children : Tree « wxPython « Python Tutorial

1. Python Tutorial
2. wxPython
3. Tree

import wx

class TestFrame(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, title="tree: misc tests", size=(400,500))

        il = wx.ImageList(16,16)

        self.fldridx = il.Add(wx.ArtProvider.GetBitmap(wx.ART_FOLDER, wx.ART_OTHER, (16,16)))
        self.fldropenidx = il.Add(wx.ArtProvider.GetBitmap(wx.ART_FILE_OPEN,   wx.ART_OTHER, (16,16)))
        self.fileidx = il.Add(wx.ArtProvider.GetBitmap(wx.ART_NORMAL_FILE, wx.ART_OTHER, (16,16)))
        
        self.tree = wx.TreeCtrl(self, style=wx.TR_DEFAULT_STYLE | wx.TR_EDIT_LABELS)

        self.tree.AssignImageList(il)

        root = self.tree.AddRoot("wx.Object")
        self.tree.SetItemPyData(root, None)
        self.tree.SetItemImage(root, self.fldridx,wx.TreeItemIcon_Normal)
        self.tree.SetItemImage(root, self.fldropenidx,wx.TreeItemIcon_Expanded)
        
        tree = ["A","B","C","D","E","F","G","H"]

        self.AddTreeNodes(root, tree)

        self.tree.Expand(root)

    def AddTreeNodes(self, parentItem, items):
        for item in items:
            if type(item) == str:
                newItem = self.tree.AppendItem(parentItem, item)
                self.tree.SetItemPyData(newItem, None)
                self.tree.SetItemImage(newItem, self.fileidx,wx.TreeItemIcon_Normal)
            else:
                newItem = self.tree.AppendItem(parentItem, item[0])
                self.tree.SetItemPyData(newItem, None)
                self.tree.SetItemImage(newItem, self.fldridx,wx.TreeItemIcon_Normal)
                self.tree.SetItemImage(newItem, self.fldropenidx,wx.TreeItemIcon_Expanded)
   
                self.AddTreeNodes(newItem, item[1])

app = wx.PySimpleApp(redirect=True)
frame = TestFrame()
frame.Show()
app.MainLoop()

19.45.Tree
	19.45.1.	Create a tree and expand its children
	19.45.2.	Set tree icon
	19.45.3.	Print tree node out
	19.45.4.	Edit tree node
	19.45.5.	Sort tree nodes
	19.45.6.	Delete a tree node
	19.45.7.	Find a tree node
	19.45.8.	Tree node expanded event
	19.45.9.	Tree node collapse event
	19.45.10.	Tree node selection changed event
	19.45.11.	Tree node activated event
	19.45.12.	Tree node begin edit event