This is a very important part of python that is often over complicated by online tutorials. It uses something similar to a variable but it can only store True and False. It's called a Boolean. We use this with while. Example
#code start
Example = False
While not Example:
Print("It's false")
Example = True
#code end
This will repeat once remove Example = True and it will go forever. Another important detail is true and True are different. For booleans you need to use True and False not true and false.
