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Performance bump on fizzbuzz

You don't have to iterate over all N integers in fizzbuzz. Just increment the smallest by its own factor x or y:

from sacred import Experiment

ex = Experiment('fizzbuzz')

@ex.config
def my_config():
    x = 10
    y = 15
    n = 100

@ex.automain
def main(x, y, n):
    i, j = x, y
    window = 1

    while i <= n or j <= n:
        # _min = min(i, j)
        # if window < m:
        #     print(*range(window, _min), end=' ')
        # window = _min + 1

        if i == j:
            print('FizzBuzz', end=' ')
            i += x
            j += y
        elif i < j:
            print('Fizz', end=' ')
            i += x
        else:
            print('Buzz', end=' ')
            j += y

    print()

Note: I commented print(*range(window, _min), end=' ') because this will print all integers (which is linear), hiding the performance improvement.

Anyways, executing your code with the following parameters takes 33 seconds:

python fizzbuzz.py with x=13 y=7 n=10000000 -F ./logs/fizzbuzz/
"start_time": "2018-08-28T02:19:37.457346",
"stop_time": "2018-08-28T02:20:10.759150"

While the code above takes only 22 seconds:

python fizzbuzz.py with x=13 y=7 n=10000000 -F ./logs/fizzbuzz/
"start_time": "2018-08-28T02:20:24.905657",
"stop_time": "2018-08-28T02:20:47.376358"

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