Great talk! Thanks for sharing. Worth noting is PEP 487 that introduced a hook that calls ___set_name___ on all descriptors upon class creation, meaning descriptors now can have knowledge of the field names they are associated with.
I really like the way you model your explanations: and clearly define what level of abstractions you are dealing with. Quite clear, no space for ambiguities. I would lve to see a full OO course in Python from you.
some notes from the lectures in @23:49 Descriptors: A generic mechanism to create getters and setter that you can resuse. A descriptor encapulates attribute getting/setting logic in a reusable way. (what is a reusable way?) th-cam.com/video/81S01c9zytE/w-d-xo.html th-cam.com/video/81S01c9zytE/w-d-xo.html - In order for a descriptor to do its magic, it needs to be a class attribute, not an instance attribute. AFAIK Properties implements the descriptor protocol, properties provides an interface to instance attributes (properties intercept access to attributes). The descriptor protocol is tied to scoping and has a execution precedence ("7 simple rules") Cant really connect more dots than this right now... What is a descriptor ? How do i use it? When do i use it? Why do i use it?
I can relate. A year ago I wouldn't understand it, too. Just keep working on it, and everything will make sense. Read more books like "Powerful Python" or "Python Cookbook", and you will understand it.
For people watching this now: PEP 487 (Python 3.6) introduced a __set_name__ hook on the descriptor which is called upon class creation. This makes it possible to store values in the instance `__dict__` with this name. See www.python.org/dev/peps/pep-0487/.
I do not understand the praise for this talk. Raymond Hettinger's excellent "Descriptor HOWTO" is clearer in all respects and more comprehensive to boot.
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Great talk! Thanks for sharing. Worth noting is PEP 487 that introduced a hook that calls ___set_name___ on all descriptors upon class creation, meaning descriptors now can have knowledge of the field names they are associated with.
Cool, thanks. Also, usage examples here: docs.python.org/3/howto/descriptor.html#customized-names
I really like the way you model your explanations: and clearly define what level of abstractions you are dealing with. Quite clear, no space for ambiguities. I would lve to see a full OO course in Python from you.
This talk makes me not want to write my own descriptors. Needs work to simplify it for daily users. GL
Talking about Descriptors is a great way to make Java developers realize they don't really understand Python, @property and @classmethod.
Probably, the best explanation I've ever seen!
some notes from the lectures in @23:49
Descriptors: A generic mechanism to create getters and setter that you can resuse.
A descriptor encapulates attribute getting/setting logic in a reusable way. (what is a reusable way?)
th-cam.com/video/81S01c9zytE/w-d-xo.html
th-cam.com/video/81S01c9zytE/w-d-xo.html - In order for a descriptor to do its magic, it needs to be a class attribute, not an instance attribute.
AFAIK Properties implements the descriptor protocol, properties provides an interface to instance attributes (properties intercept access to attributes). The descriptor protocol is tied to scoping and has a execution precedence ("7 simple rules")
Cant really connect more dots than this right now...
What is a descriptor ?
How do i use it?
When do i use it?
Why do i use it?
The Guy is genious man #simonFranklin and teaching style awesome
Gosh.. my level of understanding on python doesnt reach the level where i could understand this video
I can relate. A year ago I wouldn't understand it, too. Just keep working on it, and everything will make sense. Read more books like "Powerful Python" or "Python Cookbook", and you will understand it.
Give yourself a tap in the back, not everybody made it this fair, I mean most Python dev they stick to the basic stuff
For people watching this now: PEP 487 (Python 3.6) introduced a __set_name__ hook on the descriptor which is called upon class creation. This makes it possible to store values in the instance `__dict__` with this name. See www.python.org/dev/peps/pep-0487/.
Excellent explanation of descriptors!
Great professor
Amazing man
Didn't mention `__getattr__` and `__getattribute__`?
Awesome video！Thanks very very much!
man, basically you saved me
I do not understand the praise for this talk. Raymond Hettinger's excellent "Descriptor HOWTO" is clearer in all respects and more comprehensive to boot.
Shill
Awesome talk.
this shit is way over my head
And someone said python is easy!!