A Python for loop has two components: A container, sequence, or generator that contains or yields the elements to be looped over. In general, any object that supports Python’s iterator protocol ...

$ python iterator_test.py 463 926 1389 1852 Let’s take a look at what’s going on. We made our own class and defined a __next__ method, which returns a new iteration every time it’s called.

List comprehension and for loops are both essential tools in a Python programmer's toolkit, each with its strengths and weaknesses. By understanding the differences between them and their respective ...