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Fri Nov 18 17:30:33 CET 2005 · https://mail.python.org/pipermail/python-dev/2005-November/058206.html

Guido van Rossum wrote:

> On 11/18/05, Walter Dörwald <walter at livinglogic.de> wrote:
> 
>> >>> import StringIO, cStringIO
>> >>> s = StringIO.StringIO()
>> >>> s.truncate(-42)
>>Traceback (most recent call last):
>>   File "<stdin>", line 1, in ?
>>   File "/usr/local/lib/python2.4/StringIO.py", line 203, in truncate
>>     raise IOError(EINVAL, "Negative size not allowed")
>>IOError: [Errno 22] Negative size not allowed
>> >>> s = cStringIO.StringIO()
>> >>> s.truncate(-42)
>> >>>
> 
> 
> Well, what does a regular file say in this case?

IOError: [Errno 22] Invalid argument

Bye,
    Walter Dörwald

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[Python-Dev] Another StringIO/cStringIO discrepancy