Starting Python

Before we begin programming in Python we need to check if we have python installed to do this use the open the command line and type in:

C:\Users\Your Name>python –version

This should return the version of python you are running. If an error has been thrown that means python has not been installed.

To install Python head over to: https://www.python.org/downloads/ then click the yellow download button at the top of the page. This will download the installer for Python

On the installer make sure you tick the box for “add Python to PATH” this will allow to use python in the command line.

After the installation open the command Line and type in:

C:\Users\Your Name>python

This will return

Python version (Build, Time) [Compiler version] on win32/64 Type "help", "copyright", "credits" or "license" for more information.

Type in “1+1” and hit return this will give the answer “2”

This shows us that Python is working

To exit python in the command line type in:

exit()

What do I do if I get the error python is not recognized as an internal or external command

If you have the error python is not recognized as an internal or external command we need to add python to PATH

Go to:

Control Panel > System and Security > System > Advanced System Settings (On the left hand side)

A small window should open

Select the Advanced tab > Environment Variables (at the bottom) > select Path (on the second box called System variables) > Edit... (button at bottom)

Another window should open

New (button) > type in the location of where your Python has been installed New (button again) > The scripts folder

Python should now work in the command line