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""" Challenge 157 Task 1 LK Python """
def calc_am(what: list) -> float:
"""Return the arithmetic mean"""
return round(sum(what) / len(what), 1)
def calc_gm(what: list) -> float:
"""Return the geometric mean"""
product: int = 1
for num in what:
product *= num
return round(abs(pow(product, 1 / len(what))), 1)
def calc_hm(what: list) -> float:
"""Return harmonic mean"""
my_sum = 0
for item in what:
my_sum += 1 / item
return round(len(what) / my_sum, 1)
def calc_means(what: list) -> str:
"""Do the excercise"""
return f"AM={calc_am(what)}, GM={calc_gm(what)}, HM={calc_hm(what)}"
assert calc_means([1, 3, 5, 6, 9]) == "AM=4.8, GM=3.8, HM=2.8"
assert calc_means([2, 4, 6, 8, 10]) == "AM=6.0, GM=5.2, HM=4.4"
assert calc_means([1, 2, 3, 4, 5]) == "AM=3.0, GM=2.6, HM=2.2"
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