[프로그래머스] 배열의 평균값 - python

https://school.programmers.co.kr/learn/courses/30/lessons/120817

프로그래머스

def solution(numbers):
    sum = 0
    for i in numbers:
        sum += i
    return sum / len(numbers)

def solution(numbers):
    for i in range(1,len(numbers)):
        numbers[i] = numbers[i-1] + numbers[i]
        answer = numbers[i] / len(numbers)
    return answer

def solution(numbers):
    return sum(numbers) / len(numbers)

import numpy as np

def solution(numbers):
    return np.mean(numbers)