3 ms·

What version will contain dataclasses?

• ericfrederich 9y ago
  What do you mean by this? Do namedtuples not give you this? >>> class MyClass(namedtuple('_MyClass', ['x', 'y', 'z'])): ... def foo(self): ... return self.x * self.y + self.z ... >>> x = MyClass(4, 5, 6) >>> x.foo() 26 ... or an attrs decorated class with frozen=True? >>> import attr >>> @attr.s(frozen=True) ... class MyClass: ... x = attr.ib() ... y = attr.ib() ... z = attr.ib() ... def foo(self): ... return self.x * self.y + self.z ... >>> x = MyClass(4, 5, 6) >>> x.foo() 26
  • Dowwie 9y ago
    Close! ericvsmith, gvr, et al were inspired by attrs and have since been implementing a stdlib version of it, calling it "dataclass" see: https://github.com/ericvsmith/dataclasses https://github.com/ericvsmith/dataclasses and this comment thread is revealing: https://github.com/ericvsmith/dataclasses/issues/19 https://github.com/ericvsmith/dataclasses/issues/19
    • ericfrederich 9y ago
      Thanks for that link. Very informative interesting discussion. There must be a lot of desire for attrs from the stdlib developers.