04.07 Common Errors And Exceptions - Quiz

Check your understanding

1. What type of error prevents Python from running your code at all?

   • Runtime errors
   • Logic errors
   • Syntax errors { data-correct }
   • Type errors

2. Which error occurs when you try to access list[5] in a list with only 3 elements?

   • IndexError { data-correct }
   • KeyError
   • ValueError
   • TypeError

3. What causes a ZeroDivisionError?

   • Dividing a number by zero { data-correct }
   • Multiplying by zero
   • Adding zero to a number
   • Subtracting zero from a number

4. In the condition if age >= 13 or age <= 65:, what’s the logic error?

   • Should use ‘and’ instead of ‘or’ { data-correct }
   • Should use > instead of >=
   • Should use < instead of <=
   • Nothing is wrong with this condition

5. What’s an off-by-one error?

   • Using the wrong variable name
   • Accessing an index that’s one position off from intended { data-correct }
   • Forgetting to import a module
   • Using the wrong data type

6. Which would cause a NameError?

   • print(totall) when variable is named ‘total’ { data-correct }
   • print(5 + “hello”)
   • print(my_list[100]) on a short list
   • print(my_dict[“missing_key”])

7. What makes a loop infinite?

   • The loop condition never becomes False { data-correct }
   • Using a while loop instead of for loop
   • Not using a break statement
   • Having too many iterations

8. Which is the best way to handle division by zero?

   • Ignore it and hope it doesn’t happen
   • Check if denominator is zero before dividing { data-correct }
   • Use only whole numbers
   • Avoid division operations

9. What type of error is it when your code runs but calculates the wrong answer?

   • Syntax error
   • Runtime error
   • Logic error { data-correct }
   • Import error

10. In range(n) where n=5, what values does the range include?

    • 1, 2, 3, 4, 5
    • 0, 1, 2, 3, 4 { data-correct }
    • 0, 1, 2, 3, 4, 5
    • 1, 2, 3, 4

11. Which is an example of defensive programming?

    • Writing code as fast as possible
    • Validating inputs before using them { data-correct }
    • Using only simple data types
    • Avoiding functions entirely

12. What should you do when you get an error message?

    • Immediately ask for help
    • Read the message carefully to understand what went wrong { data-correct }
    • Delete the problematic code
    • Restart the program