Python Control Flow: Conditional Statements 4

Question 1

What is the output of the following nested conditional?

x, y = 3, 7
if x < 5:
    if y > 5:
        print('A')
    else:
        print('B')
else:
    print('C')

Accepted Answer

A

Answer

Both `x < 5` and `y > 5` are True, so the innermost branch prints 'A'.

Question 2

What will this print?

num = 0
if num:
    print(num)
else:
    print('zero')

Accepted Answer

zero

Answer

0 is falsy, so the else branch runs and prints 'zero'.

Question 3

Which statement about Python's `match` statement (Python 3.10+) is TRUE?

Accepted Answer

It provides structural pattern matching similar to switch in other languages

Answer

Python 3.10 introduced `match`/`case` for structural pattern matching, which can replace complex if/elif chains.

Question 4

What is the output?

x = 5
result = 'big' if x > 10 else 'medium' if x > 3 else 'small'
print(result)

Accepted Answer

medium

Answer

x > 10 is False, so the first else is evaluated; x > 3 is True, so 'medium' is returned.

Question 5

What is the correct way to check if a key exists in a dictionary before using it in an if statement?

Accepted Answer

if key in dict:

Answer

The `in` operator checks for key membership in a dictionary in Python.

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