Re: [pygame] Problem with pygame.image.load() and a gzip.open() stream

[Lenard Lindstrom <len-l@xxxxxxxxx>]

Paul Broadhead wrote:
> Lenard Lindstrom wrote:
>
>   
> > Which file type is out of your control, the .bmp image format or the 
> > gzip compression.
> >     
>
> Both unfortunately.
>
>   
> > Got it. GzipFile.seek() has no optional whence argument. 
> > pygame.image.load calls seek() with both an offset and whence, but
> > does not pass on the exception raised by GzipFile.seek().
> >     
>
> Thanks for looking into this.  I presume this means that if if the bug
> you're spotted was fixed, I'd still not be able to use the GzipFile
> stream.
>
>   

It is not technically a bug. It's just unfortunate that GzipFile has an 
imcomplete implementation of seek() while pygame.image.load() passes an 
unnecessary whence value: 0.

> > 2) Read the gzip file into a string and use StringIO to pass the
> > string to pygame.image.load().
> >     
>
> I did try something like that then, thanks again.
>
>   

GzipFile could be subclassed to providing a seek() method that takes a 
dummy whence argument.

--
Lenard Lindstrom
<len-l@xxxxxxxxx>