You can use 'break' in Python in all the loops: while, for, and nested. If you are using it in nested loops, it will terminate the innermost loop where you have used it, and the control of the program ...

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.