You need to install Python on your machine before you start coding. Python comes preinstalled in most of the Linux distributions. For Microsoft Windows operating systems, you can download binaries from the Python website: http://www.python.org/download/.

Currently, Python 3.x is released in addition to Python 2.x. Many of the current Linux distributions and macOS versions are still shipping Python 2 by default. However, some ship both of them.

Download the relevant installer for your operating system and the relevant version based on whether your operating system is 32 bit or 64 bit.

You may consult the documentation of your operating system to check and review your Python setup. After installing Python on your machine, you can try opening the Python interpreter from the command line by typing python. This will show the interpreter prompt, >>>, which should be similar to the following output:

~$ python
Python 2.7.12 (default, Nov 19 2016, 06:48:10) 
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>