IDE = INTEGRATED DEVELOPER ENVIRONMENT

You need one to write in python - but don't worry there are many.

IDLE - a windows programme that comes with the installation of Python on a windows machine.

PyCharm - The community edition from jetbrains is free to download
https://www.jetbrains.com/pycharm/download

Visual Studio Code.
This free programme is very powerful and can process pretty much any language you fancy.

https://code.visualstudio.com/download

Online IDEs - Programme in the browser

These are really useful as you can code from anywhere

TRINKET.IO 
I use it on here to show you code. It is free to sign up and use but you must programme in Python 2.

If you want to use Python 3, you will need to pay. However, for all the code we will write, we can do it in Python 2
More information in the next badge

https://trinket.io/

REPL.IT
A great site that allows you to code in many languages, including Python You can share and embed your replits.
I also use it on this badge system
https://repl.it/signup

If you know of any other good ones - please let us know