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Hello Pythonistas, welcome back.

This question will help you solidify your understanding of how decorators help modify functions without actually changing the code.

Sounds Weird, Right??

Question: Decorators for Function

Given the following decorator function log_execution which prints a message before and after a function’s execution, and the function greet, which simply prints a greeting:

def log_execution(func):
    def wrapper(*args, **kwargs):
        print(f"Executing {func.__name__}...")
        result = func(*args, **kwargs)
        print(f"Finished executing {func.__name__}.")
        return result
    return wrapper

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

Option A:

greet = log_execution(greet)

Option B:

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

Option B is the correct answer.

• Explanation: Just take a look at the output of the first option.

Option A: Output