On 02/28/2011 09:47 AM, Benjamin Root wrote:
On Mon, Feb 28, 2011 at 9:25 AM, Bruce Southey <bsout...@gmail.com
<mailto:bsout...@gmail.com>> wrote:
On 02/28/2011 09:02 AM, Benjamin Root wrote:
[snip]
>
>
> So, is there still no hope in addressing this old bug report of
mine?
>
> http://projects.scipy.org/numpy/ticket/1562
>
> Ben Root
>
I think you need to add more details to this. So do you have an
example
of the problem that includes code and expected output?
Perhaps genfromtxt is probably more appropriate than loadtxt for what
you want:
from StringIO import StringIO
import numpy as np
t = StringIO("1,1.3,abcde\n2,2.3,wxyz\n1\n3,3.3,mnop")
data = np.genfromtxt(t,
[('myint','i8'),('myfloat','f8'),('mystring','S5')], names =
['myint','myfloat','mystring'], delimiter=",", invalid_raise=False)
print 'Bad data raise\n',data
This gives the output that skips the incomplete 3rd line:
/usr/lib64/python2.7/site-packages/numpy/lib/npyio.py:1507:
ConversionWarning: Some errors were detected !
Line #3 (got 1 columns instead of 3)
warnings.warn(errmsg, ConversionWarning)
Bad data raise
[(1, 1.3, 'abcde') (2, 2.3, 'wxyz') (3, 3.3, 'mnop')]
Bruce
Bruce,
I think you mis-understood the problem I was reporting.
Probably - which is why I asked for more details.
You can find the discussion thread here:
http://www.mail-archive.com/numpy-discussion@scipy.org/msg26235.html
I have proposed that at the very least, an example of this problem is
added to the documentation of loadtxt so that users know to be aware
of this possibility.
I did not connect the ticket to that email thread. Removing the
structured array part of your email, I think essentially the argument is
which should be the output of:
np.loadtxt(StringIO("89.23"))
np.arange(5)[1]
These return an 0-d array and an rather old argument about that (which
may address the other part of the ticket). Really I see this behavior as
standard so you add an example to the documentation to reflect that.
In addition, loadtxt fails on empty files even when provided with a
dtype. I believe genfromtxt also fails as well in this case.
Ben Root
Errors on empty files probably should be a new bug report as that was
not in the ticket.
Bruce
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