Question

question: 7
what would this program print?
def mystery(num, pattern):
result = \\
for i in range(num):
result = result + pattern
return result

print(mystery(3, \<>\)

it doesnt print anything
<>
<> <>
<> <> <>

Explanation:

Step1: Analyze the function

The function mystery takes two parameters num and pattern. It initializes result as an empty string. Then, it has a for loop that runs num times. In each iteration, it concatenates pattern to result.

Step2: Substitute the values

Here, num = 3 and pattern = "<<>>".

• First iteration (i = 0): result = "" + "<<>>" = "<<>>"
• Second iteration (i = 1): result = "<<>>" + "<<>>" = "<<>>><<>>"
• Third iteration (i = 2): result = "<<>>><<>>" + "<<>>" = "<<>>><<>>><<>>"

Answer:

<<>>><<>>><<>>