What are the best practices for using decorators and context managers in Python?

What are the best practices for using decorators and context managers in Python?

When using decorators, ensure they are simple and reusable. For context managers, prefer using the 'with' statement for resource management.

Can you give me an example of a decorator?

Sure! Here's a simple logging decorator:

def log_function_call(func):
    def wrapper(*args, **kwargs):
        print(f'Calling {func.__name__} with {args} and {kwargs}')
        return func(*args, **kwargs)
    return wrapper

What about context managers? How do they work?

Context managers are used to manage resources. You can create one using the with statement, which ensures proper acquisition and release of resources. For example:

with open('file.txt') as f:
    data = f.read()

Are there any common mistakes to avoid?

Yes, common mistakes include not handling exceptions properly in decorators and forgetting to release resources in context managers.