File upload with Tornado

Demonstrates a server that receives a multipart-form-encoded set of files in an HTTP POST, or streams in the raw data of a single file in an HTTP PUT.

AND

Demonstrates uploading files to a server, without concurrency. It can either POST a multipart-form-encoded request containing one or more files, or PUT a single file without encoding.

https://github.com/tornadoweb/tornado/tree/master/demos/file_upload