Python Decorator Functions Coding

Question 1

What will be the output of the following code?

def logger(func):
def wrapper(*args, **kwargs):
print(f"Calling {func.__name__} with args: {args} and kwargs: {kwargs}") result = func(*args, **kwargs)
print(f"{func.__name__} returned: {result}")
return result
return wrapper
@logger
def add(a, b):
return a + b

result = add(3, 5)

Calling add with args: (3, 5) and kwargs: {} add returned: 8

add returned: 8

Calling add with args: (3, 5) and kwargs: {} 8

Question 2

What is the purpose of the @my_decorator line in the previous code?

It defines the my_decorator function

It applies the my_decorator to the say_hello function.

It prints "Hello!" to the console.

It is a syntax error.

Question 3

What does the following code do?

def repeat(n):
def decorator(func):
def wrapper(*args, **kwargs):
for _ in range(n):
func(*args, **kwargs)
return wrapper
return decorator

@repeat(3)
def greet(name):
print(f"Hello, {name}!")

greet("Alice")

It defines a decorator that repeats the greeting three times.

It defines a decorator that reverses the name three times.

It defines a decorator that raises an error.

It defines a decorator that logs the greeting.

Question 4

In the previous code , what does @repead(3) do?

It repeats the greet function three times.

It calls the repeat function three times.

It reverses the greeting three times.

It raises an error.

Question 5

What is the primary purpose of the @logger decorator in the previous code?

It adds numbers.

It multiplies numbers.

It logs function calls and their results.

It raises an error.

Question 6

What is the output of the following code?

def my_decorator(func):
def wrapper(*args, **kwargs):
print("Before function execution")
result = func(*args, **kwargs)
print("After function execution")
return result
return wrapper

@my_decorator
def add(a, b):
return a + b

result = add(3, 5)

Before function execution 8 after function execution

Before function execution after function execution

3+5

Question 7

What is the primary purpose of the wrapper function in decorator code?

It defines the decorator.

It calls the function.

It modifies the function's behavior.

It raises an error.

Question 8

What does the following code do?

def uppercase_decorator(func):
def wrapper(text):
result = func(text)
return result.upper()
return wrapper

@uppercase_decorator
def greet(name):
return f"Hello, {name}!"

print(greet("Alice"))

It defines a decorator that capitalizes the output of the greet function.

It defines a decorator that prints a greeting.

It defines a decorator that reverses the name.

It raises an error.

Question 9

What is the output of the following code?

def my_decorator(func):
def wrapper():
print("Something is happening before the function is called.")
func()
print("Something is happening after the function is called.")
return wrapper

Something is happening before the function is called. Hello! Something is happening after the function is called.

Hello! Something is happening before the function is called. Something is happening after the function is called.

Something is happening before the function is called. Something is happening after the function is called. Hello!

Hello!

Question 10

In python ,can you use more than one decorator on a single function?

Yes

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brijesh