Introduction
Decorators in Python are used to modify or extend the behavior of functions and methods. While basic decorators are useful, decorators with arguments unlock powerful patterns such as retry mechanisms, logging, and custom validations.
Table of Contents
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Introduction
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Basics of Decorators
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Writing Decorators with Arguments
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Sample Code
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Use Cases
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Conclusion
Basics of Decorators
A decorator is a function that wraps another function to modify its behavior. Decorators without arguments are simple wrappers.
Writing Decorators with Arguments
To create a decorator that accepts arguments, you need to nest three functions:
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Outer function (accepts the arguments for the decorator)
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Decorator function (accepts the target function)
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Wrapper function (executes the new logic)
Sample Code
Output:
Use Cases
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Retry failed operations
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Logging and profiling
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Authorization and validation
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Caching function results
Conclusion
Decorators with arguments are a powerful tool in Python. With them, you can write modular, reusable, and configurable logic that cleanly wraps core functionality.