Python 类型错误：“int”类型的对象不需要 len() 错误帮助
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TypeError: object of type 'int' has no len() error assistance needed
提问by Luke Hymanson
I am writing a piece of code for my code that when the user inputs 7 digits it multiplies the digits by 3 and 1 respectively. Here is the code;
我正在为我的代码编写一段代码，当用户输入 7 位数字时，它分别将数字乘以 3 和 1。这是代码；
When it goes to check if the user has entered 7 digits it gives me this error: TypeError: object of type 'int' has no len()
当它检查用户是否输入了 7 位数字时，它给了我这个错误：TypeError: object of type 'int' has no len()
回答by Idos
Well, maybe an intdoes not posses the lenattribute in Python like your error suggests?
好吧，也许 anint没有len像您的错误所暗示的那样在 Python 中拥有该属性？
Try:
尝试：
len(str(numbers))
回答by e.doroskevic
Abstract:
抽象的：
The reason why you are getting this errormessage is because you are trying to call a method on an inttype of a variable. This would work if would have called len()function on a listtype of a variable. Let's examin the two cases:
您收到此error消息的原因是因为您正尝试对int变量类型调用方法。如果len()在list变量类型上调用函数，这将起作用。让我们来看看这两种情况：
Fail:
失败：
num = 10
print(len(num))
The above will produce an error similar to yours due to calling len()function on an inttype of a variable;
由于len()在int变量类型上调用函数，上述将产生与您类似的错误；
Success:
成功：
data = [0, 4, 8, 9, 12]
print(len(data))
The above will work since you are calling a function on a listtype of a variable;
由于您正在对list变量类型调用函数，因此上述方法将起作用；
回答by bob marti
May be it is the problem of using len()for an integer value.
does not posses the len attribute in Python.
可能是使用len()整数值的问题。在 Python 中不具有 len 属性。
Error as:I will give u an example:
错误为：我会给你一个例子：
number= 1
print(len(num))
Instead of use ths,
而不是使用 ths，
data = [1,2,3,4]
print(len(data))
