I see that I misunderstood the syntax of Python for:
current_image.convert
current_image.save
current_image is a "pointer" whose type is some class, so convert() and
save() must be methods in that class. The question is what class/module?
PIL?
Wayne Watson wrote:
> I'm pretty new to Python and libraries. I'm actually trying to modify
> some code someone else wrote. There are two ways images are saved. One
> is for the user to select a "Save as GIF" menu item, or save as tiff, or
> others. The other way is that the user wants a collected image from a
> camera saved every, say, 10 minutes. The "save" process is different for
> some reason. Here are the two code segments involved (NOTE my comments
> and questions below B.):
>
> A. Save every 10 minutes
> t = time.localtime(now_time)
> s = "a%4d%02d%02d_%02d%02d%02d.tif" % (
> t.tm_year, t.tm_mon, t.tm_mday,
> t.tm_hour, t.tm_min, t.tm_sec )
> s = os.path.join("Exposures",s) <========== auto-exposures
> if not os.path.exists("Exposures"):
> os.mkdir("Exposures")
> self.current_image.save(s) <============ save image
> if self.trigger_mode:
> self.Trigger()
> self.CheckEvent()
>
>
> contrast this with where the user specifically wants the image he sees
> saved as a gif:
>
> B. From menu option
>
> def SaveGIF(self):
> if self.current_path:
> default_path = splitext(basename(self.current_path))[0] +
> ".gif"
> path = asksaveasfilename(defaultextension=".gif",
> title="Save as GIF",
> initialfile=default_path,
> filetypes=GIF_FILE_TYPES)
> else:
> path = asksaveasfilename(defaultextension=".gif",
> title="Save as GIF",
> filetypes=GIF_FILE_TYPES)
> if not path:
> return
> gif = self.current_image.convert("RGB")
> gif.save(path) <===========Save as gif.
>
> The programmer told me if I change the tif in A. to gif, jpg or
> whatever, it would work. Instead I get a file the of zero length when I
> use jpg. Can anyone explain why this wouldn't work? I see that
> current_image.convert is involved in one place and current_image.save in
> the first. What module owns these "current" methods?
>
> Hmmm, maybe I needed to use jpeg?
>
>
--
Wayne Watson (Watson Adventures, Prop., Nevada City, CA)
(121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet
"The only laws of matter are those which our minds must
fabricate, and the only laws of mind are fabricated
for it by matter." -- James Clerk Maxwell
Web Page: <www.speckledwithstars.net/>
_______________________________________________
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
