Python Error Message: invalid literal for int() with base 10

If you are reading this, you have probably gotten an error message in your Python program. Any experienced programmer will tell you that error messages will occur from time to time. Python is no different, you are going to experience occasional error messages. But don’t worry, they can be dealt with.

Description of the error.

The invalid literal for int with base 10 error message occurs when a string argument is passed into the int() function that does not represent an integer value. As a result the invalid literal for int() with base 10 error message can occur, when a user uses a file to load data into a program. If you expect the file to always have an integer at a given point and it does not you will get this error message. Fortunately, there are ways to fix this problem.

Explanation of the error.

The invalid literal for int() with base 10 error is a valueerror that can always traceback to entering the wrong string value, float value, or floating point value into a function int. There are several acceptable ways of passing values in Python that are relevant to this error message question.

  • String representation of an integer to an integer.
  • String representation of a floating-point to a floating-point.
  • String representation of an integer to a floating point number.
  • Floating point value to an integer.
  • Integer object to a floating point number.

This means that passing a string representation of a floating-point to an integer will result in our error message, as will a non integer value calculation.

How to fix the error.

The first solution example to this error is to check to make sure the input is actually a number by using the isdigit() function. If the input does not represent a number or digits, the int() function will return our value error message. The second method for fixing this error is to pass the string to the float() function. You can then pass the resulting floating-point number to the int() function. Using these two variable methods will eliminate the error message issue, and answer your integer object question. Combining the two functions into int(float(“string”)) represent a simple fix to this error.

The invalid literal for int() with base 10 error message is easy to understand because it has a straightforward cause. You are simply entering the wrong value type, into the int() function. If you could always control the files that are used for data input by users this error would not be a problem. Since you cannot control what users do, you need to check the values before putting them into a given function and arrange your code to work with different data arrangements in your calculation command.

Looking for more help with Python or NumPy errors? Check out these helpful guides:

Python Error Message: invalid literal for int() with base 10

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