A generator is a function that produces a sequence of values one at a time instead of computing them all at once and returning a list. You write it like an ordinary function but use yield instead of (or as well as) return. The presence of yield anywhere in the body turns the function into a generator function: calling it does not run its body; it returns a generator object that will run the body step by step on demand.
Free account
Keep reading for free
Create a free StudyToCert account to read the rest of this lesson: 6 more sections, 4 key terms, a real-world example, an exam tip and self-check questions. Every lesson, lab and practice test is free with an account.