a example of code
def func1(a):
def b(*args, **kwargs):
print('a = ', a)
output = a(*args, **kwargs)
output = output ** 2
print('func1 =', output)
return output
return b
@func1
def func2(b):
output = b + 2
print('func2 =', output)
return output
if __name__ == '__main__' :
output = func2(1)
print('output = ', output)
results
a = <function func2 at 0x7f67690f9ae8>
func2 = 3
func1 = 9
output = 9
description
An @ symbol at the beginning of a line is used for class, function and method decorators.
Read more here: PEP 318: Decorators Python Decorators
The most common Python decorators you will run into are: @property @classmethod @staticmethod
If you see an @ in the middle of a line, that is a different thing, matrix multiplication.