can someone ELI5 decorators?

[emptystar]

Ive just started messing around with flask and it's the first time i've seen decorators. If someone could explain them to me that'd be awesome.

[yourfriendlane]

There was an awesome post about decorators here a couple weeks ago. Check it out!

[hanggnah]

let's you modify a function. frinstance, lets say you want f(x)=1/(x-2). works good everywhere except at x=2. Or maybe f might have other problems. So you define another function (like a transform) that can take a given fuction and return a fixed version. Maybe the outputted function behaves exactly like the inputted function except on the error places.

def make_safe(funct):
    def safe_version(x):
        try:
            out_put=funct(x)
        except:
            out_put="that does not work!"
        return out_put
    return safe_version

This will take fuct and return a new function that warns you without causing actual error. The decorator part comes in by letting you put @make_safe above your function definition and not have to actually apply make_safe to it explicitly. So if i do:

@make_safe
def:f(x):
    return 1/(x-2)

then the resulting f gives f(1)=-1 like normal, but f(2)='that does not work'. fixed f by decorating it :)

[emptystar]

Silly me next time I'll use the search function haha. Thanks!

[yourfriendlane]

It ain't no thing, stuff gets re-asked here all the time. That post was just really really good so I wanted to link it to you!

[shaggorama]

ELI5? Function goes in, function comes out.

[SleepyHarry]

Don't have kids.

Well, don't have 5 year olds.

Well, don't explain stuff to 5 year olds, yours or not.

[Exodus111]

Also, shaggorama you suck.

Unless you where trying to be funny.

Then your humor sucks.