How to fix this? ValueError: invalid literal for int() with base 10 error in Python

Python

I am creating a program that reads a file and if the first line of the file is not blank, it reads the next four lines. Calculations are performed on those lines and then the next line is read. If that line is not empty it continues. However, I am getting this error:

ValueError: invalid literal for int() with base 10: ''.`

It is reading the first line but can't convert it to an integer.

What can I do to fix this problem?

2
Answers

Aug 10th, 2020 By: Ahmed

Replies

The error message invalid literal for int() with base 10 would seem to indicate that you are passing a string that's not an integer to the int() function . In other words it's either empty, or has a character in it other than a digit. You can solve this error by using Python isdigit() method to check whether the value is number or not. The returns True if all the characters are digits, otherwise False .


if val.isdigit():


The other way to overcome this issue is to wrap your code inside a Python try...except block to handle this error.


Sometimes the difference between Python2.x and Python3.x that leads to this ValueError: invalid literal for int() with base 10 . With Python2.x , int(str(3/2)) gives you "1". With Python3.x , the same gives you ("1.5"): ValueError: invalid literal for int() with base 10: "1.5".


 

2 years ago - By geverwills
 


The reason you are getting this error is that you are trying to convert a non-integer variable into an integer. Just replace the line readings = int(readings) line with the below one.



readings = int(float(readings))


 

2 years ago - By harinigupta
 
Load More
 

If you want to unleash your potential in this competitive field, please visit the Python course page for more information, where you can find the Python tutorials and Python frequently asked interview questions and answers as well.

 

This topic has been locked/unapproved. No replies allowed

Login to participate in this discussion.

Leave a reply

Before proceeding, please check your email for a verification link. If you did not receive the email, click here to request another.

Categories

Protected by Astra Security