Python lunch and file accessing challenges

[jackson kwame]

 Hi

I'm new to Python and currently taking part in a Data Science course. Python is the main coding/programming language for the course. We were guided to download the Python application through Anaconda which worked. I have been using Jupyther through a browser to practice Python exercises. However anytime we are given an assignment in Python and I download, it doesn't open in Python. 


How can I lunch Python on my PC and secondly how can I open Python files on my PC.  


Thank you.


David