PCEP Control Flow and Functions 2

Question 1

What is the output of the following code?

for i in range(3):
    if i == 1:
        continue
    print(i)

Accepted Answer

0 2

Answer

The `continue` statement skips the rest of the loop body when `i == 1`, so 1 is never printed.

Question 2

Which of the following correctly defines a function that returns the square of a number?

Accepted Answer

def square(n): return n * n

Answer

Python functions are defined with `def`, require a colon, and can use `return` to send back a value.

Question 3

What value does a Python function return if it has no `return` statement?

Accepted Answer

None

Answer

A function without a `return` statement implicitly returns `None`.

Question 4

What is the output of the following?

x = 10
if x > 5:
    print('A')
elif x > 8:
    print('B')
else:
    print('C')

Accepted Answer

A

Answer

Once the first `if` condition is True, the `elif` and `else` branches are skipped entirely.

Question 5

How many times does the following loop execute?

i = 0
while i < 5:
    i += 2

Accepted Answer

3

Answer

i takes values 0, 2, 4 before i becomes 6 which fails the condition, so the loop runs 3 times.

(PCEP) Certified Entry-Level Python Programmer Practice Test