Pywikibot is a Python-based framework to write bots for MediaWiki ([more information](https://www.mediawiki.org/wiki/Manual:Pywikibot)).
Thanks to work in Google Code-in, Pywikibot now has a script called `download_dump.py`. It downloads a Wikimedia database dump from http://dumps.wikimedia.org/ , and places the dump in a predicable directory for semi-automated use by other scripts and tests.
If the same file already exists in the folder :
- If the filename doesn't contain `latest`, it shouldn't be downloaded again.
- Endif, add the current date as a suffix to the name
You are expected to provide a patch in Wikimedia Gerrit. See https://www.mediawiki.org/wiki/Gerrit/Tutorial for how to set up Git and Gerrit.