Python allows to apply multiple decorators to callable object.
The decorator function is called based on the order or the sequence it has been listed.
Decorator can also use there own arguments. In the below example @log decorator a parameter is passed with value ‘log sample’.
Log decorator has 2 wrapper functions. Outer function accepts the reference or pointer to the decorated fucntion and an internal function holds arguments that are passed to the decorated fucntion.
The decorated function is called from the internal wrapper function along with the parameters.
The parameter passed to the decorator is also assessible in the decorator function.
Coming back to Decorator stacking. The below example is used to decorate the fucntion with multiple decorators. Here log and executiontime are decorator function and stacked on the decorated function i.e. sample