[Numpy-discussion] Using loadtxt() twice on same file freezes python

Sander de Kievit dekievit@strw.leidenuniv...
Thu Mar 26 15:24:30 CDT 2009

David Cournapeau wrote:
> On Fri, Mar 27, 2009 at 1:14 AM, Sander de Kievit
> <dekievit@strw.leidenuniv.nl> wrote:
>> Hi,
>> On my PC the following code freezes python:
>> [code]
>> import numpy as np
>> from StringIO import StringIO
>> c = StringIO("0 1\n2 3")
>> np.loadtxt(c)
>> np.loadtxt(c)
>> [/code]
>> Is this intentional behaviour or should I report this as a bug?
> Which version of numpy are you using (numpy.version.version), on which OS ?
The specifics for my platform:
Fedora release 10 (Cambridge)
kernel: #1 SMP
python: 2.5.2
numpy: 1.2.0

Also, if I close the file in between the two calls it works without 
problem (if I use a real file, that is).

> That's a most definitly not expected behavior (you should get an
> exception the second time because the "stream" is empty - which is
> exactly what happens on my installation, but your problem may be
> platform specific).
> cheers,
> David

Thanks for the quick replies! I'll report the bug.


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