python 重复元素排序

def counting_sort(array1, max_val):
    m = max_val +
    count = [] * m                  

    for a in array1:
    # count occurences
        count[a] +=
    i =
    for a in range(m):
        for c in range(count[a]):
            array1[i] = a
            i +=
    return array1  

print(counting_sort( [, , , , , , , , , , ],  ))