[Image-SIG] Unable to get PIL to load jpeg images

[Mosley Peter]

Something went wrong with my previous post - try again.  I posted this query
on comp.lang.python and received a reply suggesting I try this mailing list.

I'm still wrestling with Python / Tkinter / PIL.  I have almost got it to
work - on a Fedora Core 1 system I can now display images in a Tkinter
window.  But I also run a Fedora Core 3 system, and when I tried the same
procedures I get the following errors:- 

[kpeter at localhost jpgTest]$ python pil_jpg.py 
Exception in Tkinter callback 
Traceback (most recent call last): 
  File "/usr/lib/python2.3/lib-tk/Tkinter.py", line 1345, in __call__ 
    return self.func(*args) 
  File "pil_jpg.py", line 26, in do_something 
    a.thumbnail((200,150)) 
  File "/usr/lib/python2.3/site-packages/PIL/Image.py", line 1422, in
thumbnail 
    self.load() 
  File "/usr/lib/python2.3/site-packages/PIL/ImageFile.py", line 180, in
load 
    d = Image._getdecoder(self.mode, d, a, self.decoderconfig) 
  File "/usr/lib/python2.3/site-packages/PIL/Image.py", line 328, in
_getdecoder 
    raise IOError("decoder %s not available" % decoder_name) 
IOError: decoder jpeg not available 

I am running Python 2.3.4, PIL 1.1.5 on a Fedora Core 3 system.  I know the
code is ok, as it runs quite happily under FC1 and Windows.  I've searched
around for clues, and found a few references to this error message, but
quite frankly don't understand what they are saying. 

Searching around for files that look as if they may be the jpeg libraries I
can find 

/usr/lib/libjpeg.so.62.0.0, and a symbolic link /usr/lib/libjpeg.so.62. 

I think I somehow have to configure PIL to recognise these, but I am not
sure and anyway don't know how to do this. 
Can anyone help? 

Peter 




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