You may use this guide to make quality contributions at Hacktoberfest 2020: Hacktoberfest 2020 guide

To begin contributing, you shall get a quick overview of how Cosmos is used today. Cosmos is one of the most extensive code database and is used as:

• A datastore for various projects (such as [Quark](https://github.com/OpenGenus/

The annual Hacktoberfest is around the corner! Register on Hacktoberfest's website and open 4 pull requests during October 2020 to receive the swags (if you're the first 70,000 participants)!

In our C repository, there are currently several open issues:

What's more, you can also **fix an existing bugs, impr

Currently they wrap them into pvector which is not as efficient as it could be in Python 3.

IMO we should keep only __contains__ method

Could we add some data validation functions such as,
make upper case,
make lower case,
get random double,
get random int?