Control Flow and Functions Flashcards

What is the output of the following code? for i in range(3): if i == 1: continue print(i)

Answer: 0 2

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

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

Answer: def square(n): return n * n

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

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

Answer: None

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

What is the output of the following? x = 10 if x > 5: print('A') elif x > 8: print('B') else: print('C')

Answer: A

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

How many times does the following loop execute? i = 0 while i < 5: i += 2

Answer: 3

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

What does the `pass` statement do inside a function body?

Answer: Does nothing; acts as a placeholder

`pass` is a no-op statement used as a placeholder where Python syntax requires a statement but no action is needed.

What is the result of calling `range(1, 10, 3)` as a list?

Answer: [1, 4, 7]

`range(1, 10, 3)` starts at 1, steps by 3, and stops before 10, yielding 1, 4, 7.