"""Find mean of a list of numbers."""
def average(nums):
return sum(nums) / len(nums)
def test_average():
"""
>>> test_average()
assert 12.0 == average([3, 6, 9, 12, 15, 18, 21])
assert 20 == average([5, 10, 15, 20, 25, 30, 35])
assert 4.5 == average([1, 2, 3, 4, 5, 6, 7, 8])
if __name__ == "__main__":
"""Call average module to find mean of a specific list of numbers."""
print(average([2, 4, 6, 8, 20, 50, 70]))
