Lecture 2

1. Strings

   What is the value of variable `u` from the code below?

   once = "umbr"
   repeat = "ella"
   u = once + (repeat+" ")*4
   

    umbrella ella ella ella  check

    umbrellaellaellaella  close

    umbrella  close

    umbrella4  close

   Check

2. Comparisons

   What does the code below print?

   pset_time = 15
   sleep_time = 8
   print(sleep_time > pset_time)
   derive = True
   drink = False
   both = drink and derive
   print(both)
   

    False then False  check

    False then True  close

    True then False  close

    True then True  close

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3. Branching

   What’s printed when x = 0 and y = 5?

   x = float(input("Enter a number for x: "))
   y = float(input("Enter a number for y: "))
   if x == y:
    if y != 0:
    print("x / y is", x/y)
   elif x < y:
    print("x is smaller")
   else:
    print("y is smaller") 
   

    x is smaller  check

    y is smaller  close

    x / y is 0.0  close

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4. While Loops

   In the code below from Lecture 2, what is printed when you type “Right”?

   n = input("You're in the Lost Forest. Go left or right? ")
   while n == "right":
    n = input("You're in the Lost Forest. Go left or right? ")
   print("You got out of the Lost Forest!")
   

    You're in the Lost Forest. Go left or right?  close

    You got out of the Lost Forest!  check

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5. For Loops

   What is printed when the below code is run?

   mysum = 0
   for i in range(5, 11, 2):
    mysum += i
    if mysum == 5:
     break
     mysum += 1
   print(mysum)
   

    5  check

    6  close

    21  close

    24  close

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