[pywin32-bugs] [ pywin32-Bugs-3076741 ] "This object does not support enumeration"

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Bugs item #3076741, was opened at 2010-09-28 04:51
Message generated for change (Comment added) made by mhammond
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Category: win32
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: matt wilkie (maphew)
Assigned to: Nobody/Anonymous (nobody)
Summary: "This object does not support enumeration"

Initial Comment:
I have  script which works fine with python 2.5, but in 2.6 raises error below. The script can be nabbed from http://code.google.com/p/maphew/source/browse/trunk/gis/list-fc-aliases.py.  Unfortunately the script requires ArcGIS 9.3 installed on the host machine, along with arcgisscripting.py from here (http://www.yukongis.ca/How_To/Upgrading_ArcGIS_Python) plunked into C:\Python2.6\Lib\site-packages, so duplicating it is not easy.

I'm hoping that someone just eyeballing the code can tell me what's wrong?
Thanks

{{{
Traceback (most recent call last):
  File "list-fc-aliases.py", line 40, in <module>
    getDataSets()
  File "list-fc-aliases.py", line 17, in getDataSets
    for fd in fds:
  File "C:\Python26\lib\site-packages\win32com\client\dynamic.py", line 242, in
__getitem__
    raise TypeError("This object does not support enumeration")
TypeError: This object does not support enumeration
}}}

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>Comment By: Mark Hammond (mhammond)
Date: 2010-09-28 09:04

Message:
Or try replacing your call to win32com.client.Dispatch with
win32com.gencache.EnsureDispatch - the latter should magically run makepy
when necessary.

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Comment By: matt wilkie (maphew)
Date: 2010-09-28 09:01

Message:
hmmm, I've never used makepy before. When I run it here there are about a
hundred ArcGIS (actually "ESRI") type libraries available. I suppose I need
to find which particular one is being called by gp.ListDatasets and run
makepy on that?

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Comment By: Mark Hammond (mhammond)
Date: 2010-09-28 08:25

Message:
Is it possible you need to run 'makepy' in 2.6?  This could happen if 2.5
had makepy support generated but 2,6 did not (or vice versa).  Assuming the
same pywin32 version with both, that is the only thing I can think of.

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Comment By: matt wilkie (maphew)
Date: 2010-09-28 05:01

Message:
documentation for gp.ListDatasets method:
http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?TopicName=ListDatasets_method

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Comment By: matt wilkie (maphew)
Date: 2010-09-28 05:00

Message:
documentation for gp.ListDatasets method -
http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?TopicName=ListDatasets_method

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