Install Python from python.org or your system package manager
Open a terminal, command prompt, or PowerShell
Type `python` or `python3`
Press Enter
If Python starts, you are in the Python interpreter
To open the Python IDLE app, search for IDLE and launch it
To open Python in VS Code, install the Python extension and run a `.py` file
To open a Python file, use `python filename.py` or `python3 filename.py`