计算平均值

Sample tests

import codewars_test as test
from solution import find_average

@test.describe("Fixed Tests")
def fixed_tests():
    @test.it('Basic Test Cases')
    def basic_test_cases():
        test.assert_equals(find_average([1, 2, 3]), 2)

 Solution 

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1 2 3 4 5 6 7 8 9

def find_average(numbers):     i = 0     sum = 0     for n in numbers:         i = i + 1 #列表长度         sum = sum + n #求和      return sum / i #求平均值   find_average([1, 2, 3])

 

Output: 

3