I\'ve read the article (and few others on the subject), but still can\'t figure out how to show an image unless a link to a file existing on a web-service is hard-coded into
This looks buggy...:
r'^galleries/(landscapes)/(?P.jpg)$'
this RE will only match image names with a single character begore the jpg suffix, not four (as in, e.g., '160.jpg'). Maybe you meant...
jpg
'160.jpg'
r'^galleries/(landscapes)/(?P.*jpg)$'
...?