Python Mastery: 20 Python Decorators and Their Applications in Enhancing Function Behavior

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A decorator in Python is a design pattern that allows you to extend or modify the behavior of functions or methods without changing their actual code. Decorators are a concise and powerful way to wrap a function with additional functionality. They are often used for tasks such as logging, validation, memoization, and more.

In Python, decorators are denoted by the @decorator_name syntax. Here's a simple example:

def my_decorator(func):
    def wrapper():
        print("Something is happening before the function is called.")
        func()
        print("Something is happening after the function is called.")
    return wrapper

@my_decorator
def say_hello():
    print("Hello!")

say_hello()

• my_decorator is a function that takes another function (func) as its argument.
• Inside my_decorator, there's a nested function called wrapper that adds some functionality before and after calling the original function (func).
• The @my_decorator syntax is a shorthand way of saying say_hello = my_decorator(say_hello). It decorates the say_hello function with the behavior defined in my_decorator.
• When you call say_hello(), it actually calls the wrapper function, which, in turn, calls the…