Answer to Question #238699 in Python for Joel

Question

Write a Python program that has a runtime error.

Provide the following.

• The code of your program.
• Output demonstrating the runtime error, including the error message.
• An explanation of the error message.
• An explanation of how to fix the error.

Answer 1

The code of your program:

number = int(input('Please enter an integer:'))

Output demonstrating the runtime error, including the error message:

# python main.py
Please enter an integer:number
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: invalid literal for int() with base 10: 'number'

An explanation of the error message: An exception can occur when the value of the variable 'number' is converted to an integer. If you enter the word “number”, you get an error:  ValueError: invalid literal for int() with base 10: 'number'. Because you can't convert text to numbers. 

An explanation of how to fix the error:

try:
  number = int(input('Please enter an integer:'))
  print('You entered', number)
except ValueError:
  print('You entered invalid value')