IOError and Try Again to loop the loop.

[The Danny Bos]

Thanks gang,
I'm gonna paste what I've put together, doesn't seem right. Am I way
off?

Here's my code.
 - It goes through a table Item
 - Matches that Item ID to an API call
 - Grabs the data, saves it and creates the thumbnail
 - It dies due to Timeouts and Other baloney, all silly, nothing code
based.

items = Item.objects.all().filter(cover='').order_by('-reference_id')
for item in items:
	url = "http://someaddress.org/books/?issue=%s" % item.reference_id

	url_array = []
	url_open = urllib.urlopen(url)
	url_read = url_open.read().decode('utf-8')

	try:
		url_data = simplejson.loads(url_read)
		url_array.append(url_data)

		for detail in url_array:
			if detail['artworkUrl']:
				cover_url = detail['artworkUrl'].replace(' ','%20')
				cover_open = urllib.urlretrieve(cover_url)
				cover_name = os.path.split(cover_url)[1]

				item.cover.save(cover_name, File(open(cover_open[0])),
save=True)    ## Create and save Thumbnail

				print "Cover - %s: %s" % (item.number, url)
			else:
				print "Missing - %s: %s" % (item.number, url)

	except ValueError:
		print "Error Processing record: %s: %s" % (item.reference_id, url)
		pass
	except IOError:
		print "IOError; Retrying..."
		pass

print "Done"



On Jul 12, 12:33 pm, MRAB <pyt... at mrabarnett.plus.com> wrote:
> The Danny Bos wrote:
> > Heya,
>
> > I'm running a py script that simply grabs an image, creates a
> > thumbnail and uploads it to s3. I'm simply logging into ssh and
> > running the script through Terminal. It works fine, but gives me an
> > IOError every now and then.
>
> > I was wondering if I can catch this error and just get the script to
> > start again?
> > I mean, in Terminal it dies anyway, so I have to start it again by
> > hand, which is a pain as it dies so sporadically. Can I automate this
> > error, catch it and just get it to restart the loop?
>
> > Thanks for your time and energy,
>
> Exceptions can be caught. You could do something like this:
>
>      while True:
>          try:
>              do_something()
>              break
>          except IOError:
>              pass