Python Tutorial for Beginners 1: Install and Setup for Mac and Windows

Getting Python running on your computer is the whole point of this beginner setup walkthrough—and it’s handled separately for Mac and Windows, then unified into the same “write code, run code” workflow. On macOS, Python 2.7 often comes preinstalled, so the key step is installing Python 3 from python.org and making sure the terminal’s `python` command points to Python 3 (via a shell alias). On Windows, the essential move is installing Python 3.6 and selecting the installer option to “add Python to PATH,” so the `python` command works immediately in Command Prompt.

After installation, the tutorial shifts from setup to first contact with Python itself. Typing `python` in a terminal or Command Prompt opens an interactive prompt where code runs one line at a time. A simple `print('Hello World')` demonstrates output, and assigning a variable like `x = 10` followed by `print(x)` shows that values can be stored and retrieved interactively. The interactive mode is positioned as useful for quick tests, not for building real programs.

To write a multi-line program, the tutorial uses a plain text editor and demonstrates Python file creation with IDLE—the editor that ships with Python. In IDLE, creating a new file, writing `print('Hello World')`, and saving it as something like `intro.py` sets up a script that can be run from the command line by calling `python intro.py` (from the directory where the file lives). A short detour shows how inline comments work: lines starting with `#` are ignored by Python at runtime, serving only as notes for humans reading the code.

From there, the workflow expands beyond IDLE. The tutorial notes that beginners can stick with IDLE and run scripts from the command line, but for heavier use it recommends upgrading to a more capable editor or IDE. Examples include Sublime Text and Atom as text editors with extra functionality, and JetBrains PyCharm as a full IDE with features like debugging. The tutorial also demonstrates that Sublime Text can run the same `intro.py` file directly through its build/run commands.

The practical takeaway is a complete path from “Python not ready” to “Hello World runs reliably”: install the correct Python 3 version, ensure the command-line entry point works (`python` maps to Python 3 on macOS; PATH is set on Windows), then choose whether to code in IDLE or a preferred editor and run scripts from the terminal. The next step promised is fundamentals—starting with variables and the string data type.