为什么我的程序没有运行第一个while循环？

Question

我想写一个计算长除法问题总进位的代码。这是我为carries编写的函数。我相信问题在于，第一个while循环并没有一直运行。如果是，为什么？这是在Python 3.5中实现的。

carries = 0
sum1 = 0
countx = str(x)
county = str(y) 
countx1 = len(countx)
county1 = len(county)
countx2 = int(countx1)
county2 = int(county1)
carry_over = 0
count = countx1
index = 1
index1 = 1
carrieslist = [0,0,0,0,0,0,0,0,0,0]
while (index1 <= county1):
    sum3 = county[-index1]
    while (index <= count):
        sum2 = countx[0-index]
        sum4 = int(sum2)
        sum5 = int(sum3)
        sum1 = sum4*sum5+carry_over
        sum6 = str(sum1)
        index = index+1
        if (sum1 > 9):
            carries += 1
            carry_over = int(sum6[0])
            if carry_over > 0:
                if carry_over == 1:
                    carrieslist[1] += 1
                if carry_over == 2:
                    carrieslist[2] += 1
                if carry_over == 3:
                    carrieslist[3] += 1
                if carry_over == 4:
                    carrieslist[4] += 1
                if carry_over == 5:
                    carrieslist[5] += 1
                if carry_over == 6:
                    carrieslist[6] += 1
                if carry_over == 7:
                    carrieslist[7] += 1
                if carry_over == 8:
                    carrieslist[8] += 1  
                if carry_over == 9:
                    carrieslist[9] += 1
        else:
            carry_over = 0
    index1 = index1 + 1
print(" ")
print("Carries:",carries)
print(" ")
if sum(carrieslist) > 0:
    print("Carry digit --> Frequency")
countlist = 0
indexlist = 0
while (countlist < len(carrieslist)): 
    if (carrieslist[indexlist] > 0):
        print(indexlist,"-->",carrieslist[indexlist])
        indexlist += 1
        countlist += 1
    else:
        indexlist += 1
        countlist += 1

Answer 1

我发现了问题所在。只需在外部while循环中初始化变量index=1，如下所示。

while (index1 <= county1):
    sum3 = county[-index1]
    index = 1
    while (index <= count):
        sum2 = countx[0-index]
        sum4 = int(sum2)
        ................
        ................

请改进您的编码风格，使代码更具可读性。我花了很多时间才发现问题所在，因为很难理解你在每一份声明中都写了些什么。