n个数字相加

求s=a+aa+aaa+aaaa+aa...a的值

其中a是一个数字，多少个数字相加由键盘输入控制

a = int(input("数字："))

count = int(input("个数："))

s = ''

result = 0

for i in range(1, count + 1):

    #   第i个数字有i个a

    num = str(a) * i

    if s:

        s = s + '+' + num

    else:

        s = num

    #   将数字累加

    result += int(num)

print("{} = {}".format(s, result), )

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