HTML code for sharing thumbnail generator source code

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<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%"><div id="lc1">def create_thumb(sender, instance, signal, *args, **kwargs):
</div><div id="lc2"> if path.exists(instance.thumb_file):
</div><div id="lc3">	return
</div><div id="lc4">
</div><div id="lc5"> image = PIL.open(instance.image_file)
</div><div id="lc6"> image.thumbnail((256, 192), PIL.ANTIALIAS)
</div><div id="lc7"> image.save(instance.thumb_file)
</div><div id="lc8">
</div><div id="lc9">def delete_thumb(sender, instance, signal, *args, **kwargs):
</div><div id="lc10"> if path.exists(instance.thumb_file):
</div><div id="lc11"> remove(instance.thumb_file)
</div><div id="lc12"> print &#39;delete&#39;, instance.pk, image
</div><div id="lc13">
</div><div id="lc14">dispatcher.connect(create_thumb, signal=models.signals.post_save, sender=Image)
</div><div id="lc15">dispatcher.connect(delete_thumb, signal=models.signals.post_delete, sender=Image)
</div></pre></div>
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[color=#008000][b]def[/b][/color] [color=#0000FF]create_thumb[/color](sender, instance, signal, [color=#666666]*[/color]args, [color=#666666]**[/color]kwargs):
    [color=#008000][b]if[/b][/color] path[color=#666666].[/color]exists(instance[color=#666666].[/color]thumb_file):
	[color=#008000][b]return[/b][/color]

image [color=#666666]=[/color] PIL[color=#666666].[/color]open(instance[color=#666666].[/color]image_file)
    image[color=#666666].[/color]thumbnail(([color=#666666]256[/color], [color=#666666]192[/color]), PIL[color=#666666].[/color]ANTIALIAS)
    image[color=#666666].[/color]save(instance[color=#666666].[/color]thumb_file)

[color=#008000][b]def[/b][/color] [color=#0000FF]delete_thumb[/color](sender, instance, signal, [color=#666666]*[/color]args, [color=#666666]**[/color]kwargs):
    [color=#008000][b]if[/b][/color] path[color=#666666].[/color]exists(instance[color=#666666].[/color]thumb_file):
        remove(instance[color=#666666].[/color]thumb_file)
    [color=#008000][b]print[/b][/color] [color=#BA2121]'delete'[/color], instance[color=#666666].[/color]pk, image

dispatcher[color=#666666].[/color]connect(create_thumb, signal[color=#666666]=[/color]models[color=#666666].[/color]signals[color=#666666].[/color]post_save, sender[color=#666666]=[/color]Image)
dispatcher[color=#666666].[/color]connect(delete_thumb, signal[color=#666666]=[/color]models[color=#666666].[/color]signals[color=#666666].[/color]post_delete, sender[color=#666666]=[/color]Image)

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That method generates HTML with CSS classes. Hence you'll need the style sheet file

<div class="highlight"><pre><div id="lc1">def create_thumb(sender, instance, signal, *args, **kwargs):
</div><div id="lc2"> if path.exists(instance.thumb_file):
</div><div id="lc3">	return
</div><div id="lc4">
</div><div id="lc5"> image = PIL.open(instance.image_file)
</div><div id="lc6"> image.thumbnail((256, 192), PIL.ANTIALIAS)
</div><div id="lc7"> image.save(instance.thumb_file)
</div><div id="lc8">
</div><div id="lc9">def delete_thumb(sender, instance, signal, *args, **kwargs):
</div><div id="lc10"> if path.exists(instance.thumb_file):
</div><div id="lc11"> remove(instance.thumb_file)
</div><div id="lc12"> print &#39;delete&#39;, instance.pk, image
</div><div id="lc13">
</div><div id="lc14">dispatcher.connect(create_thumb, signal=models.signals.post_save, sender=Image)
</div><div id="lc15">dispatcher.connect(delete_thumb, signal=models.signals.post_delete, sender=Image)
</div></pre></div>
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<blockquote><code>def&nbsp;create_thumb(sender,&nbsp;instance,&nbsp;signal,&nbsp;*args,&nbsp;**kwargs):
&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;path.exists(instance.thumb_file):
&nbsp;&nbsp;&nbsp;&nbsp;return

&nbsp;&nbsp;&nbsp;&nbsp;image&nbsp;=&nbsp;PIL.open(instance.image_file)
&nbsp;&nbsp;&nbsp;&nbsp;image.thumbnail((256,&nbsp;192),&nbsp;PIL.ANTIALIAS)
&nbsp;&nbsp;&nbsp;&nbsp;image.save(instance.thumb_file)

def&nbsp;delete_thumb(sender,&nbsp;instance,&nbsp;signal,&nbsp;*args,&nbsp;**kwargs):
&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;path.exists(instance.thumb_file):
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;remove(instance.thumb_file)
&nbsp;&nbsp;&nbsp;&nbsp;print&nbsp;&#39;delete&#39;,&nbsp;instance.pk,&nbsp;image

dispatcher.connect(create_thumb,&nbsp;signal=models.signals.post_save,&nbsp;sender=Image)
dispatcher.connect(delete_thumb,&nbsp;signal=models.signals.post_delete,&nbsp;sender=Image)
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