Newbie has question that's not exactly Python...

Tue Apr 3 21:01:27 EDT 2001

I did an experiment where I tried to load a gif file into IE directly
from disk (File:Open). Instead of displaying it inline, it brought up
the helper app associated with gif files.

I believe that you'll have to add just a bit of html around your image
before a browser is going to accept it. I don't believe that
"content-type image/gif" is enough! According to the html standard, at
least <html> is needed to start things off. 

This seems to be a fairly standard minimal template for an html file:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head><title>Untitled</title></head>
<body>
<-- Image here -->
</body>
</html>

(Change the "HTML 4.0 Transitional" to 3.2 if that suits you: "HTML
3.2".)

I have seen html sources (View:source) that got away with just:
<html>
</html>

Dave LeBlanc

On Tue, 03 Apr 2001 21:08:31 GMT, "Gary Walker" <borealis3 at home.com>
wrote:

>Chris,
>
>Your answer *looks* like it might work, but, unfortunately, it doesn't.  Let
>me quickly say that I realize that you were typing it off the top of your
>head, and so one really shouldn't expect it to run.  But to me, it looks
>rather complete... but I think something's missing...
>
>Here's some actual code of mine that doesn't work:
>
>************************************
>#!/usr/bin/python
>
>import StringIO, cgi, os, sys, string, Image
>
>im = Image.open('backgroundimage.gif')
># here I'll be drawing all over my image...
>
># Now I want to send it to a browser...
>sfp = StringIO.StringIO()
>im.save(sfp,'gif')
>
>print 'Content-Type: image/gif\r\n\r\n'
>sys.stdout.write(sfp.getvalue())
>************************************
>
>Do you (or anyone else please??) see what's wrong here? It seems like it
>oughta work.
>
>As you can see, I've incorporated most of Chris's solution (see below), but
>I'm not a savvy enough Python programmer to know what's missing. I'd love to
>know the "right" way of doing this, so I can get on with the next piece of
>my program...
>
>Can anyone suggest a working solution?
>
>Thanks!!
>
>Gary Walker
>
>Chris Gonnerman wrote in message ...
>>You could use the Python Imaging Library.  I'm no expert on it; I use
>>gdmodule,
>>but PIL is more "standard."  You would do something like this in a cgi:
>>
>>    import sys
>>    from PIL import Image
>>    from StringIO import StringIO
>>
>>    img = Image.open("background.gif")  # or Image.new(...) for a blank
>>image
>>    # ... do some drawing on the image ...
>>    sfp = StringIO()
>>    img.save(sfp, "gif")  # possibly with keyword options
>>    sys.stdout.write(sfp.getvalue())
>>
>>The StringIO is required as the save() method of the Image object requires
>>seek() and tell() methods, so we can't just say
>>
>>    img.save(sys.stdout, "gif")  # BIG NO NO
>>
>>because sys.stdout may be attached to a pipe or socket.
>>
>>As I said, I'm no expert on PIL, so your mileage may vary.  There may be an
>>easier way to do this... anyone else care to comment?
>>
>
>
>