[Numpy-discussion] Type checking inconsistency
Tony Yu
tsyu80 at gmail.com
Sun Oct 16 13:02:53 EDT 2011
On Sun, Oct 16, 2011 at 12:49 PM, Pauli Virtanen <pav at iki.fi> wrote:
> (16.10.2011 18:39), Tony Yu wrote:
> > >>> import numpy as np
> > >>> a = np.arange(10)
> > >>> b = np.ones(10, dtype=np.uint8)
> >
> > # this runs without error
> > >>> b[:5] = a[:5]
> >
> > >>> mask = a < 5
> > >>> b[mask] = b[mask]
> > TypeError: array cannot be safely cast to required type
>
> Seems to be fixed in Git master
>
> >>> import numpy as np
> >>> a = np.arange(10)
> >>> b = np.ones(10, dtype=np.uint8)
> >>> mask = a < 5
> >>> b[mask] = b[mask]
> >>> b[mask] = a[mask]
> >>> np.__version__
> '2.0.0.dev-1dc1877'
>
(I see you noticed the typo in my original example: b --> a). Agreed, I'm
getting this error with an old master. I just tried master and it worked
fine, but the maintenance branch ('1.6.2.dev-396dbb9') does still have this
issue.
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