Guards and De Morgan

Questions 1 to 5 of 8

1. 1. What does this program print? ``python def greet(age): if age < 18: print("Too young", end=" ") print("Welcome", end=" ") greet(15) print("|") ``

   Welcome |Too young Welcome |Too young |Too young Welcome Welcome |
2. 2. What does this program print? ``python paid = True in_stock = False print(not (paid and in_stock), not paid and not in_stock) ``

   False TrueTrue TrueTrue FalseFalse False
3. 3. A function should decline a withdrawal of zero or less. Which part is wrong? ``python def withdraw(amount): if amount > 0: return "declined: amount must be positive" return "approved" ``

   The condition checks the good case, so it should be amount <= 0The function should return None instead of a messageThe message is too long for a return valueThe approved line should come before the guard
4. 4. A reader rewrites not (is_admin and is_owner) as not is_admin and not is_owner. Which statement is correct?

   The rewrite is correct, because each part gets a notThe rewrite is wrong, because the and must change to orThe rewrite is wrong, because the not should not appear on either partThe rewrite is correct, because and and or mean the same thing
5. 5. Does a guard clause that ends in return let the code below it skip an else?

   False, because a guard must always be followed by an elseFalse, because a return inside an if does not end the functionTrue, because a return ends the function at once, so code after the guard needs no elseTrue, because an else after a return makes the function run twice