You would also need a limit on how large of a file can be written by python. Otherwise you could have a web server that takes an upload and stores it on disk w

You would also need a limit on how large of a file can be written by python. Otherwise you could have a web server that takes an upload and stores it on disk which could fill the disk of the host machine. We can't expect developers to check for this, so Python must be patched to not write files larger than 2 kilobytes.