Typeerror unsupported operand type s for int and list

In this article, we will discuss the possible causes of Typeerror unsupported operand type s for int and list, and provide solutions to resolve the error.

But first, let’s discuss What this error means.

What is Typeerror unsupported operand type s for int and list?

The error message “unsupported operand type s for int and list” means that you are trying to operate on an integer and a list that is not allowed.

The “unsupported operand” part of the error message refers to the specific operation you are trying to perform, such as addition or subtraction

So why this TypeError occurs?

Why Typeerror unsupported operand type s for int and list Occurs?

The main reason why “Typeerror unsupported operand type s for int and list” occurs is when you are trying to add, subtract, divide, or minus a list to an integer using the +,-, *, or / operators.

These operators do not support performing arithmetic operations between a list and a number.

For Example:

list_num = [1, 2, 3, 4, 5]
sum_num = 1 + list_num
print(sum_num)

In this example, The Typeerror Triggers because we are trying to perform an operation between an integer (1) and a list (list_num).

Specifically, the + operator in 1 + list_num is trying to add an integer and a list, which is not supported in Python.

Expected Output:

TypeError: unsupported operand type(s) for +: 'int' and 'list'

Now let’s fix this error.

Typeerror unsupported operand type s for int and list – Solutions

Here are the alternative solutions that you can use to fix “unsupported operand type s for int and list” error:

Solution 1. Use simple for loop

By using a for loop, we perform the desired operation on each element in the list.

Here’s an Example snippet code:

my_list = [1, 2, 3, 4, 5]
my_number = 2
result = []

for num in my_list:
    result.append(num + my_number)

print(result)

In this code, we define a list called my_list and a number called my_number.

We then create an empty list called result.

Next, we use a for loop to iterate over each element in my_list.

On each iteration, we add my_number to the current element and append the result to the result list.

Finally, we print the contents of the result list, which should contain the result of adding my_number to each element in my_list.

Output:

[3, 4, 5, 6, 7]

Solution 2. Use List Comprehension

List comprehension is a concise and elegant way to create a new list from an existing list or any other iterable object in Python.

It allows you to write a one-liner code that performs some operation on each element of the iterable object and creates a new list from the results.

Here’s an example of how to use list comprehension to fix the error:

my_list = [1, 2, 3, 4, 5]
my_number = 2

result = [num + my_number for num in my_list]
print(result)

In this code, we define a list called my_list and a number called my_number.

We then use list comprehension to iterate over each element in my_list.

add my_number to each element, and create a new list from the results.

Finally, we print the contents of the result list

Output

[3, 4, 5, 6, 7]

Solution 3. Access Specific Items in the List

You need to access specific items in the list and perform the operation on each item individually.

Here’s an example of how to fix the error by accessing specific items in the list:

my_list = [1, 2, 3, 4, 5]
my_number = 2
result = []

for i in range(len(my_list)):
    result.append(my_list[i] + my_number)

print(result)

In this code, we define a list called my_list and a number called my_number.

We also create an empty list called result.

Next, we use a for loop to iterate over the indices of my_list.

On each iteration, we access the element of my_list at the current index and add my_number to it.

We then append the result to the result list.

Finally, we print the contents of the result list.

And those are the three possible solutions that you can use to fix “Typeerror unsupported operand type s for int and list”

I hope one or more of them helps you to fix the error.

Here are the other fixed Python errors that you can visit, you might encounter them in the future.

• Attributeerror module tensorflow compat v1 has no attribute contrib
• Attributeerror: module ‘collections’ has no attribute ‘iterable’ 
• Attributeerror module has no attribute

Conclusion

In conclusion, The “Typeerror unsupported operand type s for int and list” occurs when you use the operators to integers and lists. To resolve this error, various solutions are used in Python, such as using for Loop, using List Comprehension, and accessing specific items in the list.

By following the given solution, surely you can fix the error quickly and proceed to your coding project again.

We’re happy to help you.

Happy coding! Have a Good day and God bless.

John Paul Blauro

Programmer & Technical Writer at PIES IT Solution

John Paul Blauro is a programmer and writer at PIES IT Solution, author of 55 Python error-fix tutorials at itsourcecode.com. Specializes in Python TypeError debugging (str/int type errors, unsupported operand types, iterable-related issues) and AttributeError debugging (NoneType, dict/list/series object attribute errors) for developers and BSIT students.

Expertise: Python · Python TypeError · Python AttributeError · Type Debugging · Error Handling  · View all posts by John Paul Blauro →