Revise README for Python and ML learning journey

Update README.md

New CHanges

Python_Basics: List Updated

Advanced Python functions: type hints, args, kwargs, ML-style patterns

new quizzes and challenges

Python basics: dictionaries and student grades mini project

Practice: tuples and sets with real examples

Python basics: Operators, Conditions and loops

Python basics: variables and data types

Add README file

Add gitignore for ML project

python-for-ml

Initial commit: Python ML journey setup with notebooks