On Wed, Jul 6, 2016 at 3:35 PM, bruce <[email protected]> wrote: > Hi. > > Saw the decorator thread earlier.. didn't want to pollute it. I know, I > could google! > > But, what are decorators, why are decorators? who decided you needed them! >
They're functions that modify the decorated function. If I make a function that performs a task, I might decorate with a logging function: @logThis def doSomething(): #do stuff The logThis decorator could log the run, or modify the doSomething output, or do any number of tasks. To get that extra functionality, I need only decorate my own function. I see these a lot in Flask, a web framework, where they are used to define what parts of your website are handled by what functions, for instance. Basically, they let you extend what your functions do without needing to subclass anything. > > Thanks! > _______________________________________________ > Tutor maillist - [email protected] > To unsubscribe or change subscription options: > https://mail.python.org/mailman/listinfo/tutor > -- Alex Hall Automatic Distributors, IT department [email protected] _______________________________________________ Tutor maillist - [email protected] To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
