Generators

Lazy sequences with the yield keyword.

A function that uses yield becomes a generator — it produces values one at a time, only when asked. Great for large or infinite sequences.

def counter():
    n = 0
    while True:
        yield n
        n += 1

c = counter()
print(next(c), next(c), next(c))  # 0 1 2

main.py

Output

Press Run to execute.

Expected output

[1, 4, 9, 16, 25]