Jack Wallen generates some values:
Within the realm of programming, a generator is a routine that is used to control interaction within a loop. Generators are useful when you want to produce a large sequence of values without storing them in memory at once. The ability to create a large sequence without using up memory is important, especially when dealing with Python programs that generate a large amount of information, such as a long sequence of numbers.
Read on to see how generators work and how to build a custom generator.