3 ms·

highly recommend clicking the "witness the inevitable future" button as a python oldie coming back into python, i've been surprised by dataclasses. are they ba

by swyx 3y ago

highly recommend clicking the "witness the inevitable future" button as a python oldie coming back into python, i've been surprised by dataclasses. are they basically "backwards compatible better classes"? any strong blogposts or readings that people can share about better typed python/OSS module publishing practices?

deleted 3y ago
[deleted]
dcastm 3y ago
It’s under Growth > Files for those struggling to find the button
kzrdude 3y ago
Dataclasses are orthogonal to typing (IMO), they just use types for their evocative syntax for fields. Dataclasses are nice - they are a pared down version of the attrs library, so a simple way to create data-only or mainly-data records through classes. They are not intended to replace all classes.
fbdab103 3y ago
You reminded me of this article[0] where the author asks why not dataclasses by default? I am inclined to agree, dataclasses feel Pythonic in that they remove boilerplate with reasonable defaults (sorting, hashing, etc). [0] https://blog.glyph.im/2023/02/data-classification.html https://blog.glyph.im/2023/02/data-classification.html
- acbart 3y ago
  Yes, I really wish this was the reality. I would even be very happy with a new `data` keyword for this purpose. I'm teaching `dataclasses` in my CS1, and it's nice, but frustrating that A) students have to remember the import, and B) all my slides always have to be a bit longer thanks to the `@dataclass` line taking up space. This is a real problem for some of my longer examples...
  - swyx 3y ago
    welllll i'm not seriously proposing this but if you had a new extension, like .ty or .datapy or something, you could put whatever syntax you wanted in there and compile it down to .py...
    - plonk 3y ago
      Yes please keep stacking compilers on top of compilers. I loved dealing with Qt builds in CMake. Can't wait for Python's stable and consistent packaging tools to handle not-Python code that compiles down to Python code.
    - xigoi 3y ago
      You may be interested in http://coconut-lang.org/ http://coconut-lang.org/
wiml 3y ago
Dataclasses are basically just better namedtuples. They do work nicely with type-annotations, but the two features are kind orthogonal.

by swyx 3y ago

deleted 3y ago

[deleted]

dcastm 3y ago

It’s under Growth > Files for those struggling to find the button

kzrdude 3y ago

Dataclasses are orthogonal to typing (IMO), they just use types for their evocative syntax for fields. Dataclasses are nice - they are a pared down version of the attrs library, so a simple way to create data-only or mainly-data records through classes. They are not intended to replace all classes.

fbdab103 3y ago

You reminded me of this article[0] where the author asks why not dataclasses by default? I am inclined to agree, dataclasses feel Pythonic in that they remove boilerplate with reasonable defaults (sorting, hashing, etc). [0] https://blog.glyph.im/2023/02/data-classification.html https://blog.glyph.im/2023/02/data-classification.html

acbart 3y ago
Yes, I really wish this was the reality. I would even be very happy with a new `data` keyword for this purpose. I'm teaching `dataclasses` in my CS1, and it's nice, but frustrating that A) students have to remember the import, and B) all my slides always have to be a bit longer thanks to the `@dataclass` line taking up space. This is a real problem for some of my longer examples...
- swyx 3y ago
  welllll i'm not seriously proposing this but if you had a new extension, like .ty or .datapy or something, you could put whatever syntax you wanted in there and compile it down to .py...
  - plonk 3y ago
    Yes please keep stacking compilers on top of compilers. I loved dealing with Qt builds in CMake. Can't wait for Python's stable and consistent packaging tools to handle not-Python code that compiles down to Python code.
  - xigoi 3y ago
    You may be interested in http://coconut-lang.org/ http://coconut-lang.org/

wiml 3y ago

Dataclasses are basically just better namedtuples. They do work nicely with type-annotations, but the two features are kind orthogonal.