FastAPI Tutorial for Beginners #4 | Python Function Decorators Explained Clearly

Description

Before going deeper into FastAPI, it’s important to understand Python Function Decorators. FastAPI uses decorators to create API endpoints, so understanding how decorators work will make FastAPI much easier to learn. In this video, we break down Python decorators step by step with beginner-friendly examples. In this video, you’ll learn: ✅ What decorators are and why they are used ✅ Functions as first-class objects ✅ Passing functions as arguments ✅ What a wrapper function is ✅ How decorators modify function behavior ✅ Manual decorator application ✅ Decorator syntax using @ ✅ Using args and kwargs inside decorators ✅ Returning values from decorators ✅ Type hinting decorators with Callable and Any ✅ How FastAPI uses decorators internally Practice file used in this tutorial: function_decorator.py Run the file: python function_decorator.py This is part of a complete FastAPI tutorial series designed for beginners. #FastAPI #Python #PythonDecorators #FunctionDecorators #PythonTutorial #BackendDevelopment