Matt Nordhoff wrote:
Matt Nordhoff wrote:
You could use data: URIs [1].
For example, a 43-byte single pixel GIF becomes this URI:
<data:image/gif;base64,R0lGODlhAQABAIAAAP%2F%2F%2F%2F%2F%2F%2FyH5BAEAAAEALAAAAAABAAEAAAICTAEAOw%3D%3D>
They don't have universal browser support, but that might not be a
problem in this case.
As for generating them with Python, I'm not sure... I just used Hixie's
data: URI kitchen [2] for the above example.
[1] <http://tools.ietf.org/html/rfc2397>
[2] <http://software.hixie.ch/utilities/cgi/data/data>
Oh.. As <http://bitworking.org/news/Sparklines_in_data_URIs_in_Python>
shows, the reason I couldn't find a data: URI Python library is because
they're utterly trivial to generate:
import base64
import urllib
raw_data = create_gif()
uri = 'data:image/gif;base64,' + urllib.quote(base64.b64encode(raw_data))
(And it's even simpler if you leave out the base64-encoding.)
The caveat with URL schema data: is that the amount of data to be
transferred is significantly higher than including HTML tag <img src="">
in your HTML source and let the browser fetch the raw binary image data
in a separate HTTP request (you also have to serve from your web
application).
Ciao, Michael.
--
http://mail.python.org/mailman/listinfo/python-list
