[Numpy-discussion] Failing to understand vectorize behavior

David Huard david.huard@gmail....
Wed Jan 9 09:13:50 CST 2008


Lorenzo,

2008/1/9, lorenzo bolla <lbolla@gmail.com>:
>
> I don't think it's expected: mine are cropped to 4 characters!
>


I am on a 64 bit machine. Are you on a 32 bit one ?

In [101]: vstrip = vectorize( string.strip)


> In [102]: s = ['  aaaaaaaaaaaaaa  ' , ' bbbbbbbbbbbbbbbbbb  ', '
> cccccccccccccccccc ']
> In [103]:
> vstrip(s)
>
> Out[103]:
>
> array(['aaaa', 'bbbb',
> 'cccc'],
>
> dtype='|S4')
>
>
> You can obviously use "map", instead.
>

I'll do that,

Thanks,


David

In [104]: map(string.strip, s)
> Out[104]: ['aaaaaaaaaaaaaa', 'bbbbbbbbbbbbbbbbbb',
> 'cccccccccccccccccc']
>
>
> hth,
> L.
>
>
> On 1/9/08, David Huard <david.huard@gmail.com> wrote:
>
> > Hi all,
> >
> > I'm having trouble understanding the behavior of vectorize on the
> > following example:
> >
> > >>> import string
> > >>> from numpy import vectorize
> >
> > >>> vstrip = vectorize( string.strip)
> > >>> s = ['  aaaaaaaaaaaaaa  ' , ' bbbbbbbbbbbbbbbbbb  ', '
> > cccccccccccccccccc ']
> > >>> vstrip(s)
> > array(['aaaaaaaa', 'bbbbbbbb', 'cccccccc'],
> >       dtype='|S8')
> >
> > where all strings are cropped to 8 characters.
> > Is this expected ?
> >
> >
> > Thanks,
> >
> > David
> >
> >
> >
> > _______________________________________________
> > Numpy-discussion mailing list
> > Numpy-discussion@scipy.org
> > http://projects.scipy.org/mailman/listinfo/numpy-discussion
> >
> >
>
>
> --
> Lorenzo Bolla
> lbolla@gmail.com
> http://lorenzobolla.emurse.com/
> _______________________________________________
> Numpy-discussion mailing list
> Numpy-discussion@scipy.org
> http://projects.scipy.org/mailman/listinfo/numpy-discussion
>
>
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