In Python, decorators are special functions that, without altering their code, change or improve the behavior of other functions or methods. They add functionality either before or after a function runs by wrapping it. Decorators are commonly used for activities like logging, authentication, and rule enforcement. They are defined using the @decorator_name syntax.

For example:

python
Copy code
def decorator(func):
def wrapper():
print("Before the function call")
func()
print("After the function call")
return wrapper

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

sayhello()
This outputs additional messages before and after calling sayhello. Learn more with a Python Certification Course to master such concepts.
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