My code which adds fibonacci numbers to a list adds too many terms.

[DeaD_EyE]

Use an infinite generator together with itertools.islice.

from itertools import islice


def fib():
    a, b = 0, 1
    while True:
        yield a
        a, b = a + b, a


fibs = list(islice(fib(), 0, 100))

The yield in the function turns the function into a generator.

Generators: https://realpython.com/introduction-to-p...enerators/
Islice: https://docs.python.org/3/library/iterto...ols.islice