Novice data scientists who have never used Python (who likely don't have the language readily installed on their machines) need to first download the installer from the main website of the project, www.python.org/downloads/, and then install it on their local machine.
This section provides you with full control over what can be installed on your machine. This is very useful when you have to set up single machines to deal with different tasks in data science. Anyway, please be warned that a step-by-step installation really takes time and effort. Instead, installing a ready-made scientific distribution will lessen the burden of installation procedures and it may be well-suited for first starting and learning because ...