Python is a versatile language that offers a wide range of features to help developers write efficient and maintainable code. Two such powerful tools are decorators and mixin classes. In this article, we’ll explore how to use these concepts to take your Python skills to the next level.
Decorators: Enhancing Functions with Elegance
Decorators in Python are functions that can modify the behavior of another function without changing its source code. They provide a way to add functionality to a function in a modular and reusable way. This can be especially useful when you have a set of functions that need to share common functionality, such as logging, input validation, or caching.
Here’s a simple example of a decorator that logs the arguments passed to a function:
def log_args(func):
def wrapper(*args, **kwargs):
print(f"Calling {func.__name__} with args={args} and kwargs={kwargs}")
return func(*args, **kwargs)
return wrapper
@log_args
def add_numbers(a, b):
return a + b
result = add_numbers(2, 3)
print(result) # Output: Calling add_numbers with args=(2, 3) and kwargs={} - 5
