In computer programming, a loop is a sequence of instructions that is continuously repeated until a certain condition is reached. Typically, a certain process is done. In python FOR loop is used to ...

The for loop construction in Python easily iterates over a collection of items. Here’s what you need to know to use it well.

That loop is creating a load of empty dictionaries, then your second loop is overwriting those dictionaries with new ones that have your desired data already contained within.