3.3 Block bad input

What does the len() function do?

• Shows the length of a list or string

• Deletes an element from a list

• Adds a new element to a list

• Sorts the list

What happens if you access an index out of a list's range?

• Nothing happens

• It raises an error

• A new element is added

• The program continues normally

Which statement can be used to print the third element of a list?

• print(list[2])

• print(list[3])

• print(list[-3])

• print(list[len(list)-3])

What is an index out-of-bounds error?

• Accessing an invalid index

• Adding invalid data to a list

• Using len() on a non-list

• Printing a list directly

What does if...else help with in list handling?

• Blocking invalid inputs

• Adding elements to the list

• Removing duplicate items

• Sorting the list

What is the purpose of a validation check?

• Block bad input to prevent crashes

• Increase list length automatically

• Remove errors from a program

• Print the entire list

What is the correct way to convert user input to an integer?

• input("Enter: ")

• int(input("Enter: "))

• str(input("Enter: "))

• input(int("Enter: "))

Which operator checks for "greater than or equal to"?

• <=

• >=

• ==

• <

How does a while loop handle bad input?

• Loops until valid input is given

• Skips the invalid input

• Ends the program

• Deletes the list

What is the valid range of index numbers for a list of size 5?

• 0 to 5

• 0 to 4

• 1 to 5

• 1 to 4