Topic 5 - Session 5 - MTA Intro Course

Question 1

What statements are used in python to handle errors?

Answer 1

Try and except statements

Question 2

What except block can be used to perform input validation to ensure a user enters a numerical value?

Answer 2

except ValueError:

Question 3

Spelling or grammatical errors are known as what in programming?

Answer 3

Syntax errors

Question 4

Explain what a runtime error is in Python

Answer 4

A runtime error occurs when Python understands the code, but runs into an error when trying to follow the instructions.

Question 5

Provide two examples of a runtime error in python.

Answer 5

1. ) Python will run into a runtime error if it tries to access a file which does not exist.
2. ) If you try to divide by zero without coding for any input validation.

Question 6

When using a try/except block, what code is used if you want to display a successful message?

Answer 6

You use an else statement. It comes after the except statement.

try:
   print("something")
except:
   print("something again")
else:
   print("Success")

Question 7

When using a try/except block, what code is used to display a message to the user regardless as to whether the code worked or not?

Answer 7

Use the word “finally”

Question 8

What keyword in code is used to display an error message that the exception caused?

Answer 8

Use the keyword “raise”

Question 9

What are the toughest type of error to identify?

Answer 9

Logic errors.

Question 10

Provide an example of a logic error?

Answer 10

A logic error may be caused when no input validation is performed.

Example, a program is looking for a specific input such as “Dublin”, but the user enters “dublin” instead.