🔒 property class

[summer marsh]

i want to learn the pdf..
i will send screenshots one by one

[fringe raven]

@summer marsh

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[pseudo pewter]

fwiw, I would not explain it this way. Are you using this PDF in a class, or on your own?

and: what specifically on this slide is confusing you?

[summer marsh]

i get that first attribute...is making the function calls more readable

[pseudo pewter]

are you using this PDF in a course, or on your own?

[summer marsh]

and the fget and fset is in init function

[summer marsh]

using a pdf

[pseudo pewter]

on your own or in a course. Please try to fully answer our questions.

[supple path]

Are you using this PDF in a course or on your own?

[summer marsh]

in a course

i am using this pdf froma course

[pseudo pewter]

is there a slide that talks about @property before this slide?

[summer marsh]

no, it is after that

but in same lecture

[pseudo pewter]

and you are required to use these slides to learn?

[summer marsh]

yes

it would we a lot better if i learned tis pdg

pdf

[pseudo pewter]

I think this slide is terrible, and teaches trivia that is not important to know. I am sorry that you have to use it.

can you show us the next slide?

[pseudo pewter]

I don't understand why people teach this way. Can you show us the next slide?

to me, this is like, "Here's how you drive a car: the engine has pistons ...."

[summer marsh]

i was enjoying the lectures in the beginning..but i also thought that i have discord if i get stuck somehwere

[pseudo pewter]

I think if you understand the effect of @property, you don't need to understand the underlying mechanisms.

[summer marsh]

i somehow grasped thwhat @property does

in the last language.setter is confusing me

[pseudo pewter]

ok: @language.setter will be run when you do my_object.language = "spanish"

[summer marsh]

wait do we use these interchangeably or one is the twin of one another

[pseudo pewter]

used which interchangeably?

[summer marsh]

@language.setter and my_object.language = "spanish"

[pseudo pewter]

they aren't interchangeable. my_obj.language = "spanish" will run the method you decorated with @language.setter

[summer marsh]

and what it will run

[pseudo pewter]

you should try writing some sample code and playing with it.

[summer marsh]

uh..ohk

one more thing...does decorators works only in classes?

[pseudo pewter]

no, they work outside of classes also, but @property is meant for inside classes.

[summer marsh]

and should i learn my educators content or not?

[pseudo pewter]

you have to decide if you need to follow the course materials

[summer marsh]

okay..

[tall marsh]

though if there are going to be tests, those tests are likely on the taught content

[pseudo pewter]

that could be a factor to consider, yes

[summer marsh]

how did you learn OOP @pseudo pewter

[pseudo pewter]

idk, and it doesn't matter, since our situations are different.

[summer marsh]

ok nvm...i won't take much of your time

[pseudo pewter]

it's ok

[summer marsh]

i have nothing to say..i am still confused..but i think that is from my business...you all did well in understanding my situation

[olive phoenix]

the_language_setter_function(my_obj, "spanish") where the_language_setter_function is the def language written with @language.setter

in general if you have

@field.setter
def field(self, new_value): # lets refer to this function as field_setter
  ... 

in some class Class,

then when you have an instance of Class, lets say, my_object, then when you do my_object.field = thing it will call field_setter(my_object, thing)

[pseudo pewter]

(you need to fix the name of the method)

TIL that the setter method needs to be called field.

[olive phoenix]

yeah because it will reassign a new property rather than mutating the old one

[pseudo pewter]

right, so "field_setter" is confusing in your explanation

[olive phoenix]

yeah but field would also be confusing

[pseudo pewter]

it's all confusing!

[olive phoenix]

indeed, the less confusing (from that perspective) version would involve not using @ but thats not how things are written in practice

[pseudo pewter]

unless the goal is to understand the effect of the decorator on the class API, which I think is the first thing to understand.

but now we are into the debate of how best to teach decorators, and that's where half the confusion always comes from.

[fringe raven]

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