python - 字符串索引超出列表迭代范围

Question

我对 python 相当陌生，我不确定如何修复超出范围的索引字符串。当我想将 mylist[i][0] 发送到格式化函数时，它发生在 while 循环之后。一般来说，任何关于我的代码的指针都会很棒!

    def formatting(str1):

if str1 == '?':
    return True
else:
    return False

while(i <= len(mylist)):
    val = formatting(mylist[i][0])
    if val == True:
        str1 = mylist[i]
        str2 = mylist[i+1]
        i = i + 2
        format_set(str1, str2)
    else:
        if format == True:
            if (margin + count + len(mylist[i])) <= width:
                if (i == (len(mylist)-1)):
                    list2.append(mylist[i])
                    print(" " * margin + " ".join(list2))   
                    break
            list2.append(mylist[i])
            count += len(mylist[i])
            i += 1                          
        else:
            print(" " * margin + " ".join(list2))
            list2 = []
            count = 0
    else:
        temp_margin = margin
        temp_width = width
        width = 60
        margin = 0
        if (margin + count + len(mylist[i])) <= width:
            if (i == (len(mylist)-1)):
                list2.append(mylist[i])
                print(" " * margin + " ".join(list2))
                margin = temp_margin
                width = temp_width
                break
            list2.append(mylist[i])
            count += len(mylist[i])
            i += 1                          
        else:
            print(" " * margin + " ".join(list2))
            list2 = []
            count = 0

Answer 1

改变

i <= len(mylist)

至

i < len(mylist)