```
5. Add an import in [`youtube_dl/extractor/__init__.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/__init__.py).
6. Run `python test/test_download.py TestDownload.test_YourExtractor`. This *should fail* at first, but you can continually re-run it until you're done. If you decide to add more than one test, then rename ``_TEST`` to ``_TESTS`` and make it into a list of dictionaries. The tests will be then be named `TestDownload.test_YourExtractor`, `TestDownload.test_YourExtractor_1`, `TestDownload.test_YourExtractor_2`, etc.
-7. Have a look at [`youtube_dl/common/extractor/common.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/common.py) for possible helper methods and a [detailed description of what your extractor should return](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/common.py#L38). Add tests and code for as many as you want.
+7. Have a look at [`youtube_dl/common/extractor/common.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/common.py) for possible helper methods and a [detailed description of what your extractor should and may return](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/common.py#L62-L200). Add tests and code for as many as you want.
8. If you can, check the code with [flake8](https://pypi.python.org/pypi/flake8).
9. When the tests pass, [add](http://git-scm.com/docs/git-add) the new files and [commit](http://git-scm.com/docs/git-commit) them and [push](http://git-scm.com/docs/git-push) the result, like this:
- **EroProfile**
- **Escapist**
- **ESPN** (Currently broken)
+ - **EsriVideo**
- **EveryonesMixtape**
- **exfm**: ex.fm
- **ExpoTV**
- **imdb:list**: Internet Movie Database lists
- **Imgur**
- **Ina**
+ - **Indavideo**
+ - **IndavideoEmbed**
- **InfoQ**
- **Instagram**
- **instagram:user**: Instagram user profile
- **PlanetaPlay**
- **play.fm**
- **played.to**
+ - **Playtvak**: Playtvak.cz, iDNES.cz and Lidovky.cz
- **Playvid**
- **Playwire**
- **plus.google**: Google Plus
- **rtve.es:alacarta**: RTVE a la carta
- **rtve.es:infantil**: RTVE infantil
- **rtve.es:live**: RTVE.es live streams
+ - **RTVNH**
- **RUHD**
- **rutube**: Rutube videos
- **rutube:channel**: Rutube channels
- **ServingSys**
- **Sexu**
- **SexyKarma**: Sexy Karma and Watch Indian Porn
+ - **Shahid**
- **Shared**
- **ShareSix**
- **Sina**