What i experienced was Learning how to write a simple tip program in Python with Codecademy. It gave me a opportunity to actually write and understand what these signs mean and how they are written for the outcome to be true. It gave us examples that we had to solve including which sign you have to put or how many spaces between the words or even to capital lettering. So it was pretty confusing at first and very strict but definitely getting the hang of it and understanding it a little more.
Here are the 5 questions to the Tip Calculator Tutorial: