def find_min(nums):
    """
    Find Minimum Number in a List
    :param nums: contains elements
    :return: min number in list

    >>> for nums in ([3, 2, 1], [-3, -2, -1], [3, -3, 0], [3.0, 3.1, 2.9]):
    ...     find_min(nums) == min(nums)
    True
    True
    True
    True
    """
    min_num = nums[0]
    for num in nums:
        if min_num > num:
            min_num = num
    return min_num


def main():
    assert find_min([0, 1, 2, 3, 4, 5, -3, 24, -56]) == -56


if __name__ == "__main__":
    main()