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Pillow bug?

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  Pillow bug? kai.peters@gmail.com - 2015-03-24 12:52 -0700
    Re: Pillow bug? Ian Kelly <ian.g.kelly@gmail.com> - 2015-03-24 14:14 -0600
      Re: Pillow bug? kai.peters@gmail.com - 2015-03-24 13:24 -0700
    Re: Pillow bug? Terry Reedy <tjreedy@udel.edu> - 2015-03-24 16:17 -0400

#87901 — Pillow bug?

Judging from the message archive, the image-sig list is (just about) dead?

Disclaimer: Am a newbie - so anything is possible


using 'RGB' works fine

    img = Image.new('RGB', (inktile[0], inktile[1]), bgcolor)   

using '1' or 'L' does not (see trace below)

    img = Image.new('L', (inktile[0], inktile[1]), bgcolor)   


I change nothing else but the first parameter. If I switch the 'L' back to 'RGB' it works again.


    img      = Image.new('L', (inktile[0], inktile[1]), bgcolor)
  File "C:\Python27\lib\site-packages\PIL\Image.py", line 2015, in new
    return Image()._new(core.fill(mode, size, color))
TypeError: an integer is required

The docs say that '1' and 'L' are supported - something broken? Something I do not understand?

Thanks for any pointers,

Kai

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#87905

On Tue, Mar 24, 2015 at 1:52 PM,  <kai.peters@gmail.com> wrote:
> Judging from the message archive, the image-sig list is (just about) dead?
>
> Disclaimer: Am a newbie - so anything is possible
>
>
> using 'RGB' works fine
>
>     img = Image.new('RGB', (inktile[0], inktile[1]), bgcolor)
>
> using '1' or 'L' does not (see trace below)
>
>     img = Image.new('L', (inktile[0], inktile[1]), bgcolor)
>
>
> I change nothing else but the first parameter. If I switch the 'L' back to 'RGB' it works again.
>
>
>     img      = Image.new('L', (inktile[0], inktile[1]), bgcolor)
>   File "C:\Python27\lib\site-packages\PIL\Image.py", line 2015, in new
>     return Image()._new(core.fill(mode, size, color))
> TypeError: an integer is required
>
> The docs say that '1' and 'L' are supported - something broken? Something I do not understand?

What is the value of bgcolor that you're passing in? Per the docs: "If
given, this should be a single integer or floating point value for
single-band modes, and a tuple for multi-band modes (one value per
band)." So if you're changing from a multi-band mode to a single-band
mode, you would need to change the color argument as well.

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#87907

On Tuesday, 24 March 2015 13:15:42 UTC-7, Ian  wrote:
> On Tue, Mar 24, 2015 at 1:52 PM,  Kai wrote:
> > Judging from the message archive, the image-sig list is (just about) dead?
> >
> > Disclaimer: Am a newbie - so anything is possible
> >
> >
> > using 'RGB' works fine
> >
> >     img = Image.new('RGB', (inktile[0], inktile[1]), bgcolor)
> >
> > using '1' or 'L' does not (see trace below)
> >
> >     img = Image.new('L', (inktile[0], inktile[1]), bgcolor)
> >
> >
> > I change nothing else but the first parameter. If I switch the 'L' back to 'RGB' it works again.
> >
> >
> >     img      = Image.new('L', (inktile[0], inktile[1]), bgcolor)
> >   File "C:\Python27\lib\site-packages\PIL\Image.py", line 2015, in new
> >     return Image()._new(core.fill(mode, size, color))
> > TypeError: an integer is required
> >
> > The docs say that '1' and 'L' are supported - something broken? Something I do not understand?
> 
> What is the value of bgcolor that you're passing in? Per the docs: "If
> given, this should be a single integer or floating point value for
> single-band modes, and a tuple for multi-band modes (one value per
> band)." So if you're changing from a multi-band mode to a single-band
> mode, you would need to change the color argument as well.

Good catch - that was it.

Thanks much!

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#87906

On 3/24/2015 3:52 PM, kai.peters@gmail.com wrote:
> Judging from the message archive, the image-sig list is (just about) dead?

PIL and/or pillow should have their own lists.

-- 
Terry Jan Reedy

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