[IronPython] TypeError: integer expected occurs when __getitem__ is called
Sanghyeon Seo
sanxiyn at gmail.com
Sat Aug 11 05:49:06 CEST 2007
2007/8/11, Tianyong Tang <tiyota at gmail.com>:
> I am a newbie with IronPython, and want to test pysnmp eggs of CPython in
> IronPython.
>
> It works in CPython, but when I try it in IronPython, error occurred with
> the import of libraries at the beginning: (snip)
>
> File C:\Python25\lib\site-packages\pyasn1\v1\type\tag.py,
> line 84, in tagImplicitly
> File C:\Python25\lib\site-packages\pyasn1\v1\type\tag.py,
> line 89, in __getitem__
> TypeError: integer expected
This is IronPython issue #2728, reported last year.
http://www.codeplex.com/IronPython/WorkItem/View.aspx?WorkItemId=2728
For the IronPython team: here's the relevant lines in the traceback:
# A method of TagSet old-style class
def tagImplicitly(self, superTag):
# some lines omitted
return self[:-1] + superTag
So the index type is slice(None, -1, None), and the index should be
converted by calling __len__ (which IronPython doesn't do). And then
__getitem__ tries to index by None and TypeError is raised.
--
Seo Sanghyeon
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