[ python-Bugs-1015249 ] cgi.FieldStorage.__len__ eventually throws TypeError

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Bugs item #1015249, was opened at 2004-08-24 15:32
Message generated for change (Comment added) made by jlgijsbers
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Category: Python Library
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: Andreas Ames (yxcv)
Assigned to: Nobody/Anonymous (nobody)
Summary: cgi.FieldStorage.__len__ eventually throws TypeError

Initial Comment:
This makes it hazardous to do the following:

fs = cgi.FieldStorage(...)
if fs:
 ...

Suggestions:

1)  Fix __len__; sorry, but I don't know how.

2) Create FieldStorage.__nonzero__; a hack.

3) ?


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>Comment By: Johannes Gijsbers (jlgijsbers)
Date: 2004-08-30 16:47

Message:
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As far as I can tell, cgi.FieldStorage.__len__ only raises a
TypeError if the FieldStorage is not indexable. It's
reasonable not to support len() on an unindexable FieldStorage.

I'm just wondering why you would want to do:

fs = cgi.FieldStorage(...)
if fs:
...

Defining __nonzero__ seems reasonable if there's a reason
for testing a FieldStorage for truth value.

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