What are decorator logging basics in Python?

What are decorator logging basics in Python?

Decorator logging in Python allows you to add logging functionality to your functions easily. It helps track function calls, arguments, and return values.

Can you show me a simple example of a logging decorator?

Sure! Here's a basic example:

import logging

logging.basicConfig(level=logging.INFO)

def log_decorator(func):
    def wrapper(*args, **kwargs):
        logging.info(f'Calling {func.__name__} with {args} and {kwargs}')
        result = func(*args, **kwargs)
        logging.info(f'{func.__name__} returned {result}')
        return result
    return wrapper

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

How can I customize the logging level?

You can customize the logging level by changing the level parameter in logging.basicConfig(). For example, use logging.DEBUG for more detailed logs.

Are there any performance concerns with using decorators?

Yes, using decorators can introduce some overhead, especially if they perform extensive logging or processing. It's important to balance logging detail with performance.