AttributeError: list object has no attribute len ( Solved )

A list is a data structure that stores multiple variables in a single variable. It is mutable, unordered, and can be easily manipulated. If you are using the len() function on the list and getting the error AttributeError: list object has no attribute len error then this post will solve it.

AttributeError: list object has no attribute len error ( Cause )

If you are getting this attributeError then the most common reason is that you are not using the len() function properly.You may be using this function on the list.

You are most likely to get the list object that has no attribute len error when you will run the below lines of code.

list_strings = ["ABC","GHI","JKL","DEF"]
list_strings.len()

Output

AttributeError: 'list' object has no attribute 'len'

The solution of the list object has no attribute len error

The best way to solve this error is properly used of the len() function. The len() function finds the number of elements in the list. So don’t use the len() function like your_list.len(). Instead of this use len(your_list).

You will not get the error while executing the below lines of code.

list_strings = ["ABC","GHI","JKL","DEF"]
len(list_strings)
4

You can also find the length of the single element of the list by accessing the first element using the index. For example, I want to find the length of the first element of the list.

list_strings = ["ABC","GHI","JKL","DEF"]
len(list_strings[0])

Output

3

AttributeError list object has no attribute len error

 

Conclusion

The len() function allows you to find the length of the string or the total number of elements in a list. If you use the list() function using the dot operator then you will get the attributeerror. And if you pass your list as an argument of the len() function then you will not get the error.

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