Question

question: 3
choose the print statement below that will cause an error. assume that num has the value 6, and name has the value \isabella\.
print(name + \:\)
print(num)
print(name + \ wants \ +
um \ + \candles\)
print(name + \: \ + str(num))
print(name + \: \ + num)
question: 4
which one of the statements below will cause an error?
ans = \hi\ * 8
ans = \hi\ + 9
ans = \hi\ + \hi\ + \hi\
ans = (\a\ * 4) + \b\

Explanation:

Question 3

Option 1

print(name + ":") and print(num) are valid. name is a string, num is an integer. Printing them separately is okay.

Option 2

print(name + " wants " + "num " + "candles") is wrong. Here "num" is a string literal, not the variable num. It should be print(name + " wants " + str(num) + " candles")

Option 3

print(name + ": " + str(num)) is valid. str(num) converts the integer num to a string so that string concatenation works.

Option 4

print(name + ": " + num) is invalid. In Python, you cannot directly concatenate a string (name + ": ") with an integer (num). You need to convert the integer to a string (using str(num)).

Question 4

Option 1

ans = "hi" 8 is valid. In Python, multiplying a string by an integer repeats the string. So "hi"8 gives "hihihihihihihihi".

Option 2

ans = "hi" + 9 is invalid. In Python, you cannot directly add a string ("hi") and an integer (9).

Option 3

ans = "hi" + "hi" + "hi" is valid. String concatenation works as expected, resulting in "hihihi".

Option 4

ans = ("a" 4)+"b" is valid. First, "a"4 gives "aaaa", then adding "b" gives "aaaa b".

Answer:

Question 3: The error - causing print statement is print(name + " wants " + "num " + "candles") and print(name + ": " + num) (but the most likely intended wrong one based on variable usage is print(name + " wants " + "num " + "candles")).
Question 4: The error - causing statement is ans = "hi" + 9.