This content originally appeared on flaviocopes.com and was authored by flaviocopes.com
Decorators are a way to change, enhance or alter in any way how a function works.
Decorators are defined with the @ symbol followed by the decorator name, just before the function definition.
Example:
@logtime
def hello():
print('hello!')This hello function has the logtime decorator assigned.
Whenever we call hello(), the decorator is going to be called.
A decorator is a function that takes a function as a parameter, wraps the function in an inner function that performs the job it has to do, and returns that inner function. In other words:
def logtime(func):
def wrapper():
# do something before
val = func()
# do something after
return val
return wrapper
This content originally appeared on flaviocopes.com and was authored by flaviocopes.com
flaviocopes.com | Sciencx (2021-01-18T05:00:00+00:00) Python Decorators. Retrieved from https://www.scien.cx/2021/01/18/python-decorators/
Please log in to upload a file.
There are no updates yet.
Click the Upload button above to add an update.