How to Fix ValueError: invalid literal for int() with base 10

Sometimes while working with Python, you may get the error ‘ValueError: invalid literal for int() with base 10’. This error generally occurs when you try to convert a string representation of floating point number to an integer, or a string representation of anything except an integer (like empty string) into an integer. In this article, we will learn how to fix this problem.

How to Fix ValueError: invalid literal for int() with base 10

Let us say you try the following command.

int('5.0')

You will get the following error.

Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    int('5.0')
ValueError: invalid literal for int() with base 10: '5.0'

So a simple way to solve this problem is to call float() function on the floating point number before calling int() function on it.

int(float('5.0'))
5

If your string is possibly empty, then it is better to test for an empty string before calling int() function.

a=''
if a != '':
 int(a)
else:
 print 'empty string'

In this article, we have learnt a couple of simple ways to fix ValueError: invalid literal for int() with base 10 in Python.

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