**Important!** Edit only the README.md and if you can, use[Notedown](https://github.com/aaren/notedown) to convert it to a Jupyter Notebook (no problem if you can't).

* Use`##` headers for titles.

* Use`###` for thesub categories.

* Use`###` for thesubcategories.

* Add a link to your section to the table of contents.

* Make sure to include examples and keep explanations short.

* At the end of your section orsub category, add a[*Return to the Top*](#python-cheatsheet) link.

* At the end of your section orsubcategory, add a[*Return to the Top*](#python-cheatsheet) link.

If you don't knowwere to start, please check this out:

If you don't knowwhere to start, please check this out:

*[Mastering Markdown](https://guides.github.com/features/mastering-markdown/).

*[Mastering Issues](https://guides.github.com/features/issues/).