String Literal to Blob

Wed Apr 9 10:24:16 EDT 2008

Victor Subervi wrote:
> On Wed, Apr 9, 2008 at 1:14 AM, Gabriel Genellina 
> <gagsl-py2 at yahoo.com.ar <mailto:gagsl-py2 at yahoo.com.ar>> wrote:
> 
>      > Thanks. I apparently am printing some holder for the image. I
>     stripped
>      > out
>      > most of it with this
>      > content[0][0]
>      > but then I am left with this:
>      >
>      > array('c', '\xff\xd8\xff\xe0\\0\x10JFI...)
>      > How do I extract an image from that?
> 
>     print content.tostring()
> 
> 
> Now *that* gave me something that *looks* a lot more like an image from 
> a programmers perspective, but still no image...
> ÿØÿàJFIF...
> Actually, it does not copy and paste well, but you can see it for the 
> moment here:
> http://livestocksling.com/test/python/Shop/display_es2.py
> So, how do I convert *that* to a real live image?
> 
> 
>     Or perhaps, replace that line with content.tofile(sys.stdout)
> 
> 
> Printed nothing.
>  
> 
>      >> >   print 'Content-Type: image/jpeg\r\n'
>      >> >   print '<html><body>\n'
>      >> >   print content
>      >> >   print '</body><html>\n'
>      >> >   cursor.close()
>      >> >
>      >> > test()
> 
>      >> > The commented out line gives me a leading less than sign...and
>     that´s
>      >> > it. What do?
> 
>     Try to understand now *why* you got a single character with your
>     previous
>     code.
> 
> 
> No clue  :/
> 
> BTW, for purposes of documentation, it appears that, when sending the 
> form with the image to the script that processes the form, the following 
> is inadvisable:
> 
>   form = cgi.FieldStorage()
>   pic1 = form.getfirst('pic1', '')
> 
> This appears to work better:
> 
>   form = cgi.FieldStorage()
>   imgfile=open("pixel.gif",'rb')
>   pixel = imgfile.read()
>   pic1 = form.getfirst('pic1', pixel)
> 
> because it gives a binary default. The string appears to screw things up.
> Victor
> 
Now all you have to do is what I told you in the first place, which is 
to remove the print statements before and after "print content".

You are NOT generating HTML, you are generating a JPEG image.

regards
  Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
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