Python Decorators and Closures

Question 1

What is a decorator in Python?

Accepted Answer

A function that modifies or extends the behavior of another function

Answer

A class attribute that defines object appearance

Answer

A special comment syntax for documentation

Answer

A built-in function for string formatting

Question 2

Which symbol is used in Python's decorator syntax?

Accepted Answer

@

Answer

#

Answer

$

Answer

&

Question 3

What does functools.wraps do when used inside a decorator?

Accepted Answer

Copies the original function's metadata (like __name__ and __doc__) to the wrapper

Answer

Speeds up the decorated function

Answer

Prevents the decorator from being applied multiple times

Answer

Automatically logs all function calls

Question 4

What is a closure in Python?

Accepted Answer

A function that captures and remembers variables from its enclosing scope

Answer

A function that closes all open file handles

Answer

A way to define private class methods

Answer

A built-in error handling mechanism

Question 5

What will the following code print?

def outer():
    x = 10
    def inner():
        return x
    return inner

f = outer()
print(f())

Accepted Answer

10

Answer

None

Answer

Error: x is not defined

Answer

outer

Question 6

What does the @property decorator do in Python?

Accepted Answer

Allows a method to be accessed like an attribute

Answer

Makes a method private

Answer

Creates a class-level variable

Answer

Converts a method to a static method

Question 7

Which of the following is NOT a built-in Python decorator?

Accepted Answer

@private

Answer

@staticmethod

Answer

@classmethod

Answer

@property