Home/ Questions/TypeError: ‘builtin_function_or_method’ object is not subscriptable. How to fix it?
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Chelsie Macejkovic
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Asked: 2022-06-20T02:41:17+00:00 In:

TypeError: ‘builtin_function_or_method’ object is not subscriptable. How to fix it?

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In the program below, I’ve got a list of car brands and I’m adding the new car brand to it.
When I run the code and use the list built-in function to put a new automaker to the list, Python throws a TypeError: ‘builtin function or method’ object is not subscriptable.

cars = ['BMW', 'Audi', 'Ferrari', 'Benz']

# append the new car to the list
cars.append["Ford"]

# print the list of new cars
print(cars)

Output:

Traceback (most recent call last):
File "c:\Personal\IJS\Code\main.py", line 4, in <module>
cars.append["Ford"]
TypeError: 'builtin_function_or_method' object is not subscriptable

Where did I do wrong? Please let me know how to fix it. Thanks.

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1 Answer

  1. Best Answer
    Expert

    The cause: The append() method is not being used properly, which is why you are seeing this issue. Despite the fact that the append() function is a built-in function, you are indexing it as though it were an array by using square brackets [].

    Solution: By recognizing append() as a proper function rather than indexing can fix error.  In order to make a proper function, we simply need to insert parenthesis () in place of the square brackets[].

    cars = ['BMW', 'Audi', 'Ferrari', 'Benz']

# append the new car to the list
cars.append("Ford")

# print the list of new cars
print(cars)

    Output:

    ['BMW', 'Audi', 'Ferrari', 'Benz', 'Ford']
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