求助各位大佬，明天考试啦

你好，请发截图

rep = int(input ())
for i in rep:
    n = int(input())
    a = 2
    b = 1
    temp =0
    arr = []
    int k=0
    for j in rang(n):
        k = a/b
        arr.append(k)
        temp = a
        a=a+b
        b = temp
    sum = 0
    int l =0
    for m in arr:
        sum = sum + arr[l]
        l=l+1
    print(round(sum,2)
    del.arr