I searched for the meaning of @ when it comes before a function in Python and I couldn't find a helpful thing.
For example, I saw this code in Django:
@login_required
...and this in the goto-statement package:
@with_goto
What does it mean?
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Ronan Boiteau
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Alirezaarabi
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1Have a search for ‘**python decorators**’. And please can you rewrite your question using proper case; it’s difficult to read. Thanks! – S3DEV Mar 30 '20 at 18:23
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https://stackoverflow.com/questions/6392739/what-does-the-at-symbol-do-in-python – pip install frisbee Mar 30 '20 at 18:24
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It is decorator syntax. It is syntactic sugar for `def foo(): ....; foo = decorator(foo)` – juanpa.arrivillaga Mar 30 '20 at 18:25
1 Answers
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It represent the Decorator. A decorator is a function that takes another function and extends the behavior of the latter function without explicitly modifying it.
def decorator_function(func):
def inner_function():
print("Before the function is called.")
func()
print("After the function is called.")
return inner_function
@decorator_function
def args_funtion():
print("In the middle we are!")
Actually this @decorator_function decorator perform the same job as:
args_funtion = decorator_function(args_funtion)
And now if you call it this would be the result:
>>> args_funtion()
Before the function is called.
In the middle we are!
After the function is called.
