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12. Generators With Yield

Generators are functions that use yield to produce a sequence of values lazily.

Example​

def count_up_to(n):
    i = 1
    while i <= n:
        yield i
        i += 1

for number in count_up_to(5):
    print(number)

Benefits​

  • Save memory (values produced one at a time).
  • Easy to write compared to custom iterators.

Wrap-Up​

  • Use yield in functions to create generators.