Bugs item #1447234, was opened at 2006-03-10 11:12
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Category: Tkinter
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: Hernan P. Dacharry (hernanpd)
Assigned to: Martin v. Löwis (loewis)
Summary: tkinter Dialog fails when more than four buttons are used
Initial Comment:
Example code:
#! /usr/bin/env python
import Dialog
from Tkinter import *
root = Tk()
Button(root, text="Hello!").pack()
root.update()
dialog = Dialog.Dialog(None, {'title': 'Test Dialog',
'text': "Text...",
'bitmap': '',
'default': 0,
'strings':
('Button0','Button1','Button2','Button3','Button4')})
print 'dialog: ', dialog.num
This example works well, except when clicking in
Button4 that fails:
Traceback (most recent call last):
File "test.py", line 12, in ?
dialog = Dialog.Dialog(None, {'title': 'Test Dialog',
File "/usr/lib/python2.3/lib-tk/Dialog.py", line 21,
in __init__
cnf['bitmap'], cnf['default'],
TypeError: getint() argument 1 must be string, not tuple
I tried to trace the error (learning in the way a
little bit of python and tcl/tk ;)), mostly due to the
bizarre nature of this problem (note that in tcl/tk
there are no problems when creating dialogs with 4 or
more buttons).
In /usr/lib/python2.3/lib-tk/Dialog/py the exception is
raised because it expects a string as the result to the
call to 'tk_dialog', and for some 'obscure' reason (and
I mean it, I even inspected the Tcl/Tk sources looking
for a reason for this) if the call to 'tk_dialog' has
more than 4 buttons (more than 4 string arguments at
the end) it return a tuple with only one element, the
string result.
The impression I got after browsing the sources of
python/tkinter and Tcl/Tk is that this may be caused
because in tcl there is almost no difference between a
list and string, in this way in the tcl language a
string or a list containing only one string are not
really different.
I have this problem when using python2.3 or python2.4
with Tcl/Tk8.4 (in my particular case under
Debian/Testing distribution);
A quick workaround (although I 'm not sure if it would
cause some problems with other things) would be to
change 'workarounds = 1' to 'workarounds = 0' in
Tkinter.py.
Another option would be to change all calls to tk
functions within tkinter that allways expect as a
result a string...
Hernan
(my apologies for making the report so long)
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