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0007768

VTK

(No Category)

public

2008-10-01 23:17

2013-04-05 19:37

Reporter

Alexander Pletzer

Assigned To

David Partyka

Priority

normal

Severity

major

Reproducibility

always

Status

closed

Resolution

fixed

Platform

OS Version

Product Version

Target Version

Fixed in Version

Summary

0007768: Python vtkTkRenderWindowInteractor failure with Tcl/Tk 8.5

Description

The instantiation of vtkTkRenderWindowInteractor under Python fails with the latest tcl/tk version 8.5 on Fedora 9 x86_64. To see the problem it suffices
to run any of the examples under VTK/Examples/*/Python which uses vtkTkRenderWindowInteractor. For instance:

[pletzer@localhost Python]$ pwd
/home/research/pletzer/Download/VTK/Examples/Annotation/Python

[pletzer@localhost Python]$ python DispAllFonts.py
Traceback (most recent call last):
  File "DispAllFonts.py", line 79, in <module>
    vtkw = vtkTkRenderWindowInteractor(root, rw=renWin, width=800)
  File "/usr/lib/python2.5/site-packages/VTK-5.3.0-py2.5.egg/vtk/tk/vtkTkRenderWindowInteractor.py", line 48, in __init__
    vtkLoadPythonTkWidgets(master.tk)
  File "/usr/lib/python2.5/site-packages/VTK-5.3.0-py2.5.egg/vtk/tk/vtkLoadPythonTkWidgets.py", line 54, in vtkLoadPythonTkWidgets
    if len(path) > 0 and path[0] == '{' and path[-1] == '}':
TypeError: object of type '_tkinter.Tcl_Obj' has no len()

Additional Information

The problem is due to path containing not only a list of strings but also _tkinter.Tcl_Obj instances. This problem has been described at http://www.python.org/doc/2.3/whatsnew/node18.html. [^]

Cure: Replace

except AttributeError:

by

except: ###### fix AttributeError:

at line 57 in file /usr/lib/python2.5/site-packages/VTK-5.3.0-py2.5.egg/vtk/tk/vtkLoadPythonTkWidgets.py.

Thanks for fixing this.

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Attached Files

vtkLoadPythonTkWidgets.py.patch [^] (630 bytes) 2008-10-20 11:46 [Show Content] [Hide Content]

--- vtkLoadPythonTkWidgets.py.1.4	2008-10-20 17:54:22.000000000 +0200
+++ vtkLoadPythonTkWidgets.py.modified	2008-10-20 17:57:46.000000000 +0200
@@ -37,9 +37,9 @@
             # try block needed when one uses Gordon McMillan's Python
             # Installer.
             if len(prev) > 0 and prev[0] == '{' and prev[-1] != '}':
-                pathlist[-1] = prev+' '+path
+                pathlist[-1] = prev+' '+str(path)
             else:
-                pathlist.append(path)
+                pathlist.append(str(path))
         except AttributeError:
             pass
     # a common place for these sorts of things

Relationships

Notes
(0013907) dr4Ke (reporter) 2008-10-20 11:47	My patch for this issue is joined.

(0026201) David Gobbi (developer) 2011-04-17 00:57	It looks like this issue was fixed by David Partyka, so I'm assigning the bug to him. commit 0c2451b1be36798517a59c7943593479c4bfd136 Author: Dave Partyka <dave.partyka@kitware.com> Date: Fri Jul 3 10:29:11 2009 -0400 http://vtk.org/gitweb?p=VTK.git;a=commitdiff;h=0c2451b1be36798517a59c7943593479c4bfd136 [^]

Issue History
Date Modified	Username	Field	Change
2008-10-01 23:17	Alexander Pletzer	New Issue
2008-10-20 11:46	dr4Ke	File Added: vtkLoadPythonTkWidgets.py.patch
2008-10-20 11:47	dr4Ke	Note Added: 0013907
2011-02-26 10:30	David Gobbi	Assigned To	=> David Gobbi
2011-02-26 10:30	David Gobbi	Status	backlog => tabled
2011-04-17 00:57	David Gobbi	Note Added: 0026201
2011-04-17 00:57	David Gobbi	Assigned To	David Gobbi => David Partyka
2011-06-16 13:11	Zack Galbreath	Category	=> (No Category)
2013-04-05 19:36	Berk Geveci	Status	backlog => tabled
2013-04-05 19:36	Berk Geveci	Resolution	open => fixed
2013-04-05 19:37	Berk Geveci	Status	tabled => closed