Unlock the Secrets of Avoiding `Int Object is Not Subscriptable` Error in Python – Learn with These Easy Code Examples

Table of content

  1. Introduction
  2. What is 'int object is not subscriptable' Error in Python?
  3. Why Does the Error Occur?
  4. Understanding the Error with Easy Code Examples
  5. Best Practices to Avoid the Error
  6. Conclusion
  7. Additional Resources


Python is an open-source programming language that has gained immense popularity in recent years. It is widely used for building web applications, machine learning models, and data analysis tools. However, even experienced Python developers sometimes encounter the infamous "int object is not subscriptable" error. This error occurs when you try to index or slice an integer object, which is not allowed in Python. In this article, we will explore the concept of subscripting in Python and how to avoid this error. We will also dive into some easy-to-understand code examples that illustrate the solutions we discuss.

What is ‘int object is not subscriptable’ Error in Python?

If you're working with Python, you may have come across the "int object is not subscriptable" error at some point. This error occurs when you try to access an item in an integer, which is generally not allowed. Here are some useful things to know about this error:

  • "Int object is not subscriptable" is a TypeError, which means that there is a problem with the data types being used in your program.
  • This error typically happens when you try to access an item in an integer by using square brackets, which is called subscripting.
  • Subscripting is only allowed on certain types of data, such as lists and dictionaries.
  • Integers are not subscriptable because they are immutable, which means that they cannot be changed once they are created.

Here's an example of how this error might occur:

my_number = 123
print(my_number[1])  # <-- this will raise a TypeError

In this case, trying to get the second digit of my_number by using subscripting will result in a TypeError because my_number is an integer.

To avoid this error, it's important to make sure that you're using the correct types of data and that you're not trying to subscript an integer. If you need to work with a number as if it were a list, you can convert it to a string first and then use string methods to access individual characters. Alternatively, you can use a list or a tuple to store a series of numbers that can be subscripted.

Why Does the Error Occur?

The 'Int Object is Not Subscriptable' error is a common issue in Python that developers encounter when they try to access an element in a list or a tuple using square brackets. Here are some reasons why this error may occur:

  • Type Error: Python does not support indexing of integer objects, so if you try to use square brackets to access an element in an integer, you'll get the 'Int Object is Not Subscriptable' error.

  • Incorrect Syntax: Another reason for this error is a syntax mistake. For example, if you miss the square brackets while indexing a list, you'll get this error.

  • Memory Consumption Issues: In some instances, this error can occur when your code is trying to access a large amount of data. This is because the operation requires a significant amount of memory, and the program is unable to allocate additional memory due to system constraints.

It is crucial to understand the source of the error before attempting to fix it. Let's take a look at some code examples that will help you to get a better understanding of this error.

Understanding the Error with Easy Code Examples

At some point in your Python coding journey, you may have come across "Int object is not subscriptable" error. This error occurs when you try to index an integer or a number, which is not possible in Python. Here, we will explore the reasons behind this error and how to fix it with easy code examples.

What Causes the Error?

The "int object is not subscriptable" error occurs when we try to access an index position of a Python integer. For example, if you define a variable as:

num = 123

and then try to access an index position of the num variable, like:


you'll get the error. This is because integers in Python are not sequences or collections, and therefore they do not have index positions.

How to Fix the Error?

To fix this error, we need to make sure that we only use subscripting on sequences, i.e., collections of values. Here are a few ways to do it:

  1. Convert the int into a str and then access its index position like a collection string.
num = 123
num_str = str(num)
# Output: 1
  1. Use a Python container object that stores the integer, such as a list, tuple, or dictionary.
num_list = [123]
# Output: 123
  1. Use an integer in the context where it is not trying to act like a sequence.
num = 123
num_squared = num * num
# Output: 15129

By following any of the above methods, we can easily and efficiently fix the "int object is not subscriptable" error in our Python code.

In conclusion, understanding the reason this error occurs and how to fix it is essential for writing error-free Python code. By applying the easy code examples demonstrated above, you can avoid this error and write clean, efficient, and easy-to-maintain Python code!

Best Practices to Avoid the Error

Now that we understand what the 'int object is not subscriptable' error is and what causes it, let's take a look at some best practices to help us avoid it in our Python code.

Use Meaningful Variable Names

When you create variables in your code, make sure to use meaningful names that accurately reflect the values they represent. By doing this, you can avoid accidentally assigning an integer value to a variable that you intended to be a list or dictionary, which can cause the 'int object is not subscriptable' error.

Check Variable Types

Before attempting to index or slice a variable, ensure that it is a list, tuple, or dictionary, and not an integer or other type of object. You can check the type of a variable using the type() function. If the variable is not the expected type, you can either convert it to the appropriate type or modify your code to use a different variable.

Use Error Handling

When working with variables that may be susceptible to the 'int object is not subscriptable' error, it's a good idea to use error handling to gracefully handle any potential errors. You can use try-except blocks to catch and handle any errors that may arise, which can prevent your program from crashing or producing unexpected results.

Test Your Code

One of the most important things you can do to avoid errors like 'int object is not subscriptable' is to thoroughly test your code before deploying it. By testing your code in a variety of scenarios and with different inputs, you can identify potential issues and catch errors before they become a problem.

By following these best practices and staying vigilant when working with variables in your Python code, you can avoid the 'int object is not subscriptable' error and ensure that your code runs smoothly and reliably.


In , the 'int object is not subscriptable' error in Python can be quite tricky to understand and resolve. However, with some knowledge of what causes this error and how to avoid it, you can ensure that your Python programs run without any issues. By keeping in mind the various scenarios that can cause this error, you can write better code and perform more accurate debugging when necessary.

Here are some key takeaways from this article:

  • The 'int object is not subscriptable' error occurs when you try to use an index or a slice on an integer object, which is not possible in Python.
  • This error can occur in a variety of scenarios, such as trying to index an integer in a list or trying to slice an integer string.
  • You can avoid this error by ensuring that you are using the correct data type for your operations, such as converting integers to strings before slicing.
  • Remember to always check the data type of your variables and values to avoid these types of errors.

We hope this article has been helpful in understanding the 'int object is not subscriptable' error and how to avoid it. With some practice and knowledge, you can become proficient in writing Python code that is free from such errors.

Additional Resources

If you're looking to dive deeper into the 'int object is not subscriptable' error or want to learn more about Python, there are a lot of great resources out there! Here are a few to get you started:

Python Documentation

The official Python documentation is always a great resource for learning more about the language. The tutorial section covers the basics of Python and can help you understand some of the concepts we've discussed in this article.

Stack Overflow

Stack Overflow is a community-driven Q&A site for programming questions. You can find a lot of great information on Python and the 'int object is not subscriptable' error by searching their database of questions and answers. If you have a specific issue you're struggling with, chances are that someone else has had the same issue and has already found a solution.

Python Courses

There are a lot of online courses available that can help you learn Python and avoid common errors like 'int object is not subscriptable'. Sites like Codecademy, Coursera, and Udemy offer a variety of courses at different skill levels, so you can find one that fits your needs.

Python Books

If you prefer learning from books, there are also a lot of great options out there. Some popular choices include "Python Crash Course" by Eric Matthes, "Automate the Boring Stuff with Python" by Al Sweigart, and "Learning Python, 5th Edition" by Mark Lutz.

By using these , you can deepen your understanding of Python and avoid common coding errors like 'int object is not subscriptable'. Happy coding!

Cloud Computing and DevOps Engineering have always been my driving passions, energizing me with enthusiasm and a desire to stay at the forefront of technological innovation. I take great pleasure in innovating and devising workarounds for complex problems. Drawing on over 8 years of professional experience in the IT industry, with a focus on Cloud Computing and DevOps Engineering, I have a track record of success in designing and implementing complex infrastructure projects from diverse perspectives, and devising strategies that have significantly increased revenue. I am currently seeking a challenging position where I can leverage my competencies in a professional manner that maximizes productivity and exceeds expectations.
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