What is the primary purpose of the decorator below?

import time
def timer(func):
    def wrapper(*args, **kwargs):
        start_time = time.time()
        result = func(*args, **kwargs)
        end_time = time.time()
        print(f"{func.__name__} took {end_time - start_time:.2f} seconds to run.")
        return result
    return wrapper
@timer
def slow_function():
    time.sleep(2)
    print("Function execution completed.")
slow_function()

What is the correct syntax to create an empty dictionary in Python? (Note: one or more answers may be correct, but selecting wrong answers will lead to negative marks)

Which of the following is the recommended way to import the 'random' module in Python for most use cases?

Which of the following is the correct syntax for a for loop in Python?