Int object is not subscriptable python ошибка

В чем смысл и причина ошибки

Ошибка «‘X’ object is not subscriptable» означает, что вы пытаетесь обратиться к объекту типа X по индексу, но этот тип не поддерживает обращение по индексу. Например, 1[0] не имеет смысла.

После первой итерации цикла переменная ways содержит значение [(2, 0), 5, 1, 4, 1, 0, 1]. Заметно, что добавлялись не кортежи, а просто числа. Код обращается к этим числам по индексу, что и приводит к нашей ошибке.

Почему не добавляются кортежи? Дело в сигнатуре метода extend:

extend(self, iterable):
    ...

Этот метод принимает iterable, итерирует и каждое полученное значение добавляет в список. В вашем примере он получает кортеж из двух чисел и добавляет в список эти числа.

Как добавить кортеж в список одним элементом

Проще всего будет использовать метод append, который принимает 1 объект.

ways.append((first_op(ways[ind][0]),  ind + 1))

Можно также создать новый кортеж или список из одного элемента, как рекомендуется в соседнем ответе.

# кортеж из одного элемента: (a,)
# запятая обязательна!
ways.extend( ( (first_op(ways[ind][0], ind + 1), ) )

# список из одного элемента: [a]
ways.extend( [ (first_op(ways[ind][0], ind + 1) ] )

Introduction

Some of the objects in python are subscriptable. This means that they hold and hold other objects, but an integer is not a subscriptable object. We use Integers used to store whole number values in python. If we treat an integer as a subscriptable object, it will raise an error. So, we will be discussing the particular type of error that we get while writing the code in python, i.e., TypeError: ‘int’ object is not subscriptable. We will also discuss the various methods to overcome this error.

What is TypeError?

The TypeError occurs when you try to operate on a value that does not support that operation. Let us understand with the help of an example:

Suppose we try to concatenate a string and an integer using the ‘+’ operator. Here, we will see a TypeError because the + operation is not allowed between the two objects that are of different types.

#example of typeError

S = "Latracal Solutions"
number = 4
print(S + number)

Output:

Traceback (most recent call last):
  File "<pyshell#5>", line 1, in <module>
    print(S + number)
TypeError: can only concatenate str (not "int") to str

Explanation:

Here, we have taken a string ‘Latracal Solutions” and taken a number. After that, in the print statement, we try to add them. As a result: TypeError occurred.

What is ‘int’ object is not subscriptable?

When we try to concatenate string and integer values, this message tells us that we treat an integer as a subscriptable object. An integer is not a subscriptable object. The objects that contain other objects or data types, like strings, lists, tuples, and dictionaries, are subscriptable. Let us take an example :

1. Number: typeerror: ‘int’ object is not subscriptable

#example of integer which shows a Typeerror

number = 1500
print(number[0])

output:

Traceback (most recent call last):
  File "<pyshell#7>", line 1, in <module>
    print(number[0])
TypeError: 'int' object is not subscriptable

Explanation:

Here, we have taken a number and tried to print the through indexing, but it shows type error as integers are not subscriptable.

2. List: typeerror: ‘int’ object is not subscriptable

This TyperError problem doesn’t occur in the list as it is a subscriptable object. We can easily perform operations like slicing and indexing.

#list example which will run correctly

Names = ["Latracal" , " Solutions", "Python"]
print(Names[1])

Output:

Solutions

Explanation:

Here firstly, we have taken the list of names and accessed it with the help of indexing. So it shows the output as Solutions.

Daily Life Example of How typeerror: ‘int’ object is not subscriptable can Occur

Let us take an easy and daily life example of your date of birth, written in date, month, and year. We will write a program to take the user’s input and print out the date, month, and year separately.

#Our program begins from here

Date_of_birth = int(input("what is your birth date?"))

birth_date = Date_of_birth[0:2]

birth_month = Date_of_birth[2:4]

birth_year = Date_of_birth[4:8]

print(" birth_date:",birth_date)
print("birth_month:",birth_month)
print("birth_year:",birth_year)

Output:

what is your birth date?31082000
Traceback (most recent call last):
  File "C:/Users/lenovo/Desktop/fsgedg.py", line 3, in <module>
    birth_date = Date_of_birth[0:2] 
TypeError: 'int' object is not subscriptable

Explanation:

Here firstly, we have taken the program for printing the date of birth separately with the help of indexing. Secondly, we have taken the integer input of date of birth in the form of a date, month, and year. Thirdly, we have separated the date, month, and year through indexing, and after that, we print them separately, but we get the output ad TypeError: ‘int’ object is not subscriptable. As we studied above, the integer object is not subscriptable.

Solution of TypeError: ‘int’ object is not subscriptable

We will make the same program of printing data of birth by taking input from the user. In that program, we have converted the date of birth as an integer, so we could not perform operations like indexing and slicing.

To solve this problem now, we will remove the int() statement from our code and run the same code.

#remove int() from the input()

Date_of_birth = input("what is your birth date?")

birth_date = Date_of_birth[0:2]

birth_month = Date_of_birth[2:4]

birth_year = Date_of_birth[4:8]

print(" birth_date:",birth_date)
print("birth_month:",birth_month)
print("birth_year:",birth_year)

Output:

what is your birth date?31082000
 birth_date: 31
birth_month: 08
birth_year: 2000

Explanation:

Here, we have just taken the input into the string by just removing the int(), and now we can do indexing and slicing in it easily as it became a list that is subscriptable, so no error arises.

Must Read

Conclusion: Typeerror: ‘int’ object is not subscriptable

We have learned all key points about the TypeError: ‘int’ object is not subscriptable. There are objects like list, tuple, strings, and dictionaries which are subscriptable. This error occurs when you try to do indexing or slicing in an integer.

Suppose we need to perform operations like indexing and slicing on integers. Firstly, we have to convert the integer into a string, list, tuple, or dictionary.

Now you can easily the solve this python TypeError like an smart coder.

However, if you have any doubts or questions, do let me know in the comment section below. I will try to help you as soon as possible.

Happy Pythoning!

Python TypeError: ‘int’ object is not subscriptable

This error occurs when you try to use the integer type value as an array.

In simple terms, this error occurs when your program has a variable that is treated as an array by your function, but actually, that variable is an integer.

Example 1) Error Code

#Simple program with error

productPrice = 3000

print(productPrice[0])

OUTPUT:

Traceback (most recent call last):
File "F:/python code/intProgram.py", line 3, in <module>
print(productPrice[0])
TypeError: 'int' object is not subscriptable

In the above program as you can see we have declared an integer variable ‘productPrice’ and in the next line, we are trying to print the value of integer variable productPrice[0] as a list.

Correct code

productPrice = 3000

print("Product price is ", productPrice)

Example 2: Error Code

#Code with error

#User input start
productName = input("Enter product name : ")
productPrice = input("Enter product price : ")
#User input ends
x = 0
#giving the value of product price to the variable x in int format
int(x[productPrice])
#calculating the price after discount
productPriceAfterDiscount = 100 - x
#printing the output
print (productName + "is available for Rs. " + productPriceAfterDiscount + ".")

In the example above, we have assigned an integer value to variable ‘productPrice’, but in print statement, we are trying to use it as an array.

Solution

To resolve this error, you need to avoid using integer type values as an array.

Correct code:

#Code without error

#User input start
productName = input("Enter product name : ")
productPrice = input("Enter product price : ")
#User input ends
#giving the value of product price to the variable x in int format
x = int(productPrice)
#calculating the price after discount
productPriceAfterDiscount = x - 100
#printing the output
print (productName + " is available for Rs. " + str(productPriceAfterDiscount) + " after discount.")

How to avoid this Error

You can avoid this error if you keep the following points in your mind:

• Always use a sensible and meaningful variable name
• Name of the variables should always describe the data they hold
• Dont use variable name same as python in-built function name, module name & constants