How can Tornado serve a single static file at an arbitrary location?

Question

I am developing a simple web app with Tornado. It serves some dynamic files and some static ones. The dynamic ones are not a problem, but I am having trouble serving a static fi

Answer 1

StaticFileHandler expects two arguments, so if you want a single url (/foo.json) to be mapped to your file path you can use:

app = tornado.web.Application([
(r'/foo.json()', tornado.web.StaticFileHandler, {'path': '/path/to/foo.json'})
])

The regex will match /foo.json and send the empty capture group (), which will cause the filepath to be used as is. When the capture group is not empty, /path/to/foo.json will be treated as a directory /path/to/foo.json/, and the handler will try to match whatever is within the capture group to a file name in that directory.