[Bubble Sort] - Python 3.5

bubble_sort.py

# Bubble Sort


def bubble_sort(nums, step=True):
    """Implement the Bubble sort on nums.

    Args:
        nums (list): Contains integers to sort.
        step (bool): If True, prints each iteration.

    Returns:
        list: Naturally-sorted nums.
    """
    for a in range(len(nums) - 1):
        if step:
            print(nums)
        for b in range(1, len(nums) - 1):
            if nums[b-1] > nums[b]:
                t = nums[b-1]
                nums[b-1] = nums[b]
                nums[b] = t
    return nums


def main():
    """Run bubble_sort() on nums."""
    nums = [5, 4, 7, 3, 10, -5, -7, 20]
    nums_sorted = bubble_sort(nums)

if __name__ == "__main__":
    main()