Latest* version of **Python 3** is needed. See if it is already installed [here](#finding-the-correct-keyword-for-python). If not, download the matching release for your platform [here](https://www.python.org/downloads/) and install it. If you are a *Windows* user, selecting **Add Python 3 to PATH** option is mandatory.
- **On Windows 8/8.1/10**: Press the File tab on **Windows Explorer**, click on **Open Windows PowerShell** or **Open Windows Command Prompt** or look for *Command Prompt* or *PowerShell* in *Start Menu*.
Go inside the folder where script.py is located. If you are not familiar with changing directories on command-prompt and terminal read *Changing Directories* in [this article](https://lifehacker.com/5633909/who-needs-a-mouse-learn-to-use-the-command-line-for-almost-anything)