How to get Python and how to get to use it
There are several ways to get your own copy of Python 3, depending on the operating system you use.
Linux users most probably have Python already installed - this is the most likely scenario, as Python's infrastructure is intensively used by many Linux OS components.
For example, some distributors may couple their specific tools together with the system and many of these tools, like package managers, are often written in Python. Some parts of graphical environments available in the Linux world may use Python, too.
If you're a Linux user, open the terminal/console, and type:
python3
at the shell prompt, press Enter and wait.
If you see something like this:
Python 3.4.5 (default, Jan 12 2017, 02:28:40)
[GCC 4.2.1 Compatible Clang 3.7.1 (tags/RELEASE_371/final)] on linux
Type "help", "copyright", "credits" or "license" for more information.
then you don't have to do anything else.
If Python 3 is absent, then refer to your Linux documentation in order to find out how to use your package manager to download and install a new package - the one you need is named python3 or it's name begins with that.
All non-Linux users can download a copy at https://www.python.org/downloads/.
Downloading and installing Python
Because the browser tells the site you've entered the OS you use, the only step you have to take is to click the appropriate Python version you want.
In this case, select Python 3. The site always offers you the latest version of it.
If you're a Windows user, start the downloaded .exe file and follow all the steps.
Leave the default settings the installer suggests for now, with one exception - look at the checkbox named Add Python 3.x to Path and check it.
If you're a macOS user, a version of Python 2 may already have been preinstalled on your computer, but since we will be working with Python 3, you will still need to download and install the relevant .pkg file from the Python site.
