Python 类型错误：“int”对象不可订阅

TypeError: 'int' object is unsubscriptable

提问by b8b8j

In python I get this error:

在 python 中，我收到此错误：

TypeError: 'int' object is unsubscriptable

This happens at the line:

这发生在这一行：

sectorcalc[i][2]= ((today[2]/yesterday[2])-1)

I couldn't find a good definition of unsubscriptable for python anywhere.

我在任何地方都找不到 python 不可订阅的好定义。

for quote in sector[singlestock]:
        i+=1
        if i < len(sector):
            if i==0:
                sectorcalc[i][0]= quote[0]
                sectorcalc[i][2]= 0
                sectorcalc[i][3]= 0
                sectorcalc[i][4]= 0
                sectorcalc[i][5]= 0
                sectorcalc[i][6]= 0
                sectorcalc[i][7]= 0
            else:                    
                yesterday = sector[singlestock-1][i]

                print yesterday                                

                today = quote

                print type(today[2])
                sectorcalc[i][2]= ((today[2]/yesterday[2])-1)
                sectorcalc[i][3]= (today[3]/yesterday[3])-1
                sectorcalc[i][4]= (today[4]/yesterday[4])-1
                sectorcalc[i][5]= (today[5]/yesterday[5])-1 
                sectorcalc[i][6]= (today[6]/yesterday[6])-1
                sectorcalc[i][7]= (today[7]/yesterday[7])-1

What does this error mean?

这个错误是什么意思？

采纳答案by pyfunc

The "[2]" in today[2] is called subscript.

今天[2]中的“[2]”称为下标。

This usage is possible only if "today" is a sequence type. Native sequence types - List, string, tuple etc

仅当“今天”是序列类型时才可能使用此用法。本机序列类型 - 列表、字符串、元组等

Since you are getting an error - 'int' object is unsubscriptable. It means that "today" is not a sequence but an int type object.

由于您收到错误 - 'int' 对象是不可订阅的。这意味着“今天”不是一个序列而是一个 int 类型的对象。

You will need to find / debug why "today" or "yesterday" is an int type object when you are expecting a sequence.

当您需要一个序列时，您将需要查找/调试为什么“今天”或“昨天”是一个 int 类型对象。

[Edit: to make it clear]

[编辑：说清楚]

Error can be in

错误可能在

1. sectorcalc[i]
2. today (Already proved is a list)
3. yesterday

1. 部门计算[i]
2. 今天（已经证明是一个列表）
3. 昨天

回答by duffymo

This is confusing to read:

这是令人困惑的阅读：

today = quote 

Is today = datetime.date.today()? Why would a date suddenly refer to a quote? Should the variable name be quoteForTodayor something more expressive? Same for yesterday. Dividing two dates as you do makes no sense to me.

是today = datetime.date.today()吗？为什么日期会突然引用引用？变量名是否应该quoteForToday更具有表现力？对于yesterday. 像你这样划分两个日期对我来说毫无意义。

Since this is a quote, would todayand yesterdayrefer to prices or rates on different days? Names matter - choose them carefully. You might be the one who has to maintain this six months from now, and you won't remember what they mean, either.

既然这是一个quote， 会today和yesterday指的是不同日期的价格或费率吗？名字很重要 - 仔细选择它们。从现在起六个月后，您可能是必须保持这种状态的人，而且您也不会记住它们的含义。

Not that the code you wrote is valid, but I can't see why you wouldn't use a loop.

并不是说您编写的代码有效，但我不明白您为什么不使用循环。

for j in range(2,7):
    sectorcalc[i][j] = (today[j]/yesteday[j])-1

instead of

代替

        sectorcalc[i][2]= ((today[2]/yesterday[2])-1)
        sectorcalc[i][3]= (today[3]/yesterday[3])-1
        sectorcalc[i][4]= (today[4]/yesterday[4])-1
        sectorcalc[i][5]= (today[5]/yesterday[5])-1 
        sectorcalc[i][6]= (today[6]/yesterday[6])-1
        sectorcalc[i][7]= (today[7]/yesterday[7])-1 

回答by Eric Leschinski

How to reproduce that error:

如何重现该错误：

myint = 57
print myint[0]  

The people who wrote the compiler said you can't do that in the following way:

编写编译器的人说你不能通过以下方式做到这一点：

TypeError: 'int' object is unsubscriptable

If you want to subscript something, use an array like this:

如果要下标，请使用如下数组：

myint = [ 57, 25 ]
print myint[0]

Which prints:

哪个打印：

57

Solution:

解决方案：

Either promote your int to a list or some other indexed type, or stop subscripting your int.

要么将您的 int 提升为列表或其他索引类型，要么停止为您的 int 添加下标。