Bugs item #1693079, was opened at 2007-04-02 11:19
Message generated for change (Settings changed) made by rhettinger
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Category: Python Library
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: IWL (iwl)
>Assigned to: Raymond Hettinger (rhettinger)
Summary: Can't save empty array in shelve
Initial Comment:
iwl wrote:
> I've tryed to save some data containing empty arrays (array('f')) in a
> shelve.
> It looks like the shelve has some problems with empty arrays, get
> allways:
> TypeError: ("'NoneType' object is not iterable", <type 'array.array'>,
> ('f', None))-
> Messages when dealing with the readed back shelve.
> Seems like I have to avoid empty arrays in a shelve.
That seems to be a bug in the underlying pickling mechanism:
>>> from array import array
>>> from cPickle import loads, dumps
>>> loads(dumps(array("f", [1])))
array('f', [1.0])
>>> loads(dumps(array("f")))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: ("'NoneType' object is not iterable", <type 'array.array'>, ('f',
None))
Please submit a bug report.
----------------------------------------------------------------------
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1693079&group_id=5470
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