I'm using PIL 1.1.6 on Ubuntu jaunty, and noticed a problem with invoking
im.show() more than once without closing the image viewing window. On this
system, im.show() uses "eog" to view the images. If you do something like:
>>>im.show() # don't close the eog window
>>>im.show()
then the second im.show() causes an error. The actual images don't matter: they
could be the same or different.
The two im.show() calls invoke Image._showxv() twice, which effectively does
this:
os.system("(eog /tmp/tmp123; rm -f /tmp/tmp123)&")
os.system("(eog /tmp/tmp456; rm -f /tmp/tmp456)&")
However, eog is very clever and tries to reuse its first instance. So the
second instantiation of eog exits immediately after notifying the first to
display /tmp/tmp456. But then the file disappears out from under it.
The _showxv() code shows a similar problem already came up on OS X, and a
"sleep 20" was inserted before the "rm". For eog, another, perhaps more elegant
solution is to invoke eog as "eog -n", which always starts a new instance
instead of reusing an existing one.
Regards,
Dan
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