Python PYGTK树视图中未显示不同的列值

我执行了这个程序：

#!/usr/bin/env python

import gtk

class CellRenderer:
    def __init__(self):
        window = gtk.Window()
        window.set_default_size(200,200)

        liststore = gtk.ListStore(str, str)
        liststore.append(["Fedora","http://fedoraproject.org"])
        liststore.append(["Slackware","http://www.slackware.com"])
        liststore.append(["Sidux","http://sidux.com"])

        treeview = gtk.TreeView(liststore)
        column_text = gtk.TreeViewColumn("Distributions")
        column_sample= gtk.TreeViewColumn("Links")
        treeview.append_column(column_text)
        treeview.append_column(column_sample)

        cellrenderer_text = gtk.CellRendererText()
        column_text.pack_start(cellrenderer_text,False)
        column_text.add_attribute(cellrenderer_text,"text",0)

        cellrenderer_sample = gtk.CellRendererText()
        column_sample.pack_start(cellrenderer_sample, False)
        column_sample.add_attribute(cellrenderer_sample,"text", 0)

        window.connect("destroy", lambda q : gtk.main_quit())
        window.add(treeview)
        window.show_all()

CellRenderer()
gtk.main()

我得到的结果窗口如下所示：

---

您可能已经注意到，

liststore

中附加的列表在第二个索引中有链接。为什么这些链接都没有显示在第二列中？

您现在引用的是同一个索引

column_sample.add_attribute(cellrenderer_sample,"text", 0)

换成

column_sample.add_attribute(cellrenderer_sample,"text", 1)

完整文件

import gtk

class CellRenderer:
    def __init__(self):
       window = gtk.Window()
       window.set_default_size(200,200)

       liststore = gtk.ListStore(str, str)
       liststore.append(["Fedora","http://fedoraproject.org"])
       liststore.append(["Slackware","http://www.slackware.com"])
       liststore.append(["Sidux","http://sidux.com"])

       treeview = gtk.TreeView(liststore)
       column_text = gtk.TreeViewColumn("Distributions")
       column_sample= gtk.TreeViewColumn("Links")
       treeview.append_column(column_text)
       treeview.append_column(column_sample)

       cellrenderer_text = gtk.CellRendererText()
       column_text.pack_start(cellrenderer_text,False)
       column_text.add_attribute(cellrenderer_text,"text",0)

       cellrenderer_sample = gtk.CellRendererText()
       column_sample.pack_start(cellrenderer_sample, False)
       column_sample.add_attribute(cellrenderer_sample,"text", 1)

       window.connect("destroy", lambda q : gtk.main_quit())
       window.add(treeview)
       window.show_all()

CellRenderer()
gtk.main()