[Idle-dev] installation denied

[Roberto Machorro Mejia]

Hello every one!
  I am new in Python and IDLE. When trying to run IDLE I got the problem

[roberto@pc-machorro idle]$ python idle.py
Traceback (innermost last):
  File "idle.py", line 3, in ?
    PyShell.main()
  File "PyShell.py", line 625, in main
    t = PyShell(flist)
  File "PyShell.py", line 255, in __init__
    OutputWindow.__init__(self, flist, None, None)
  File "OutputWindow.py", line 15, in __init__
    apply(EditorWindow.__init__, (self,) + args)
  File "EditorWindow.py", line 153, in __init__
    self.saved_change_hook()
  File "EditorWindow.py", line 393, in saved_change_hook
    self.top.wm_title(title)
AttributeError: wm_title

Placing a coment to this line make the program continue, open a tk
window but errors in there.
How can I solve this problem?
Thank you in advance
Roberto