contibute to python basics

[harsh2ai]

Don't forget to contribute to earn your T-shirt !!!

[Manavpreeet]

I will pick this

[chrd3v]

To avoid double work, i'm working on python_lists!

[mhrownaghi]

I want to work on python tuples.

[JayWelborn]

I submitted a PR with a regex pattern matching example

[duydosomething]

I would like to work on slicing please!

[Dev-Akash]

I would like to add following:

• fabonacci series
• even or odd (if-else statement)
• switch case (converting numbers to week-days)

[brilam]

I've added an example for basic operations on files. Please review this and merge if you think everything is good :)