from Hacker News

Python: language moratorium is lifted

by prog on 2/26/11, 8:36 AM with 29 comments

• by gjm11 on 2/26/11, 10:01 AM

  In case anyone's wondering about the two PEPs GvR mentions:

  PEP 380 (http://www.python.org/dev/peps/pep-0380/) would provide a convenient way for one generator function to yield all the values of another as part of its work. At the moment you have to say something like

    for x in foo:
      yield x
  

  which isn't all that bad in itself but breaks down when your caller starts sending values back to you, coroutine-style. (Because they go to foo and you never get to see them.)

  PEP 3152 (http://www.python.org/dev/peps/pep-3152/) uses the generator mechanism (as enhanced by PEP 380) which already provides something rather like coroutines, and adds some syntactic sugar to let you write coroutines that look like coroutines.

• by dalke on 2/26/11, 9:40 AM

  Quoting from PEP 303:

  This PEP proposes a temporary moratorium (suspension) of all changes to the Python language syntax, semantics, and built-ins for a period of at least two years from the release of Python 3.1. In particular, the moratorium would include Python 3.2 (to be released 18-24 months after 3.1) but allow Python 3.3 (assuming it is not released prematurely) to once again include language changes.

  Python 3.2 is newly released and 3.3 development has started.

• by Jach on 2/26/11, 9:44 PM

  Did anyone else think "Wow, 2 years already"? (I remember people claiming the moratorium was a signal of Python's demise...)

  I'm happy about PEP 380, it seems like they might as well do PEP 3152 as well since they're highly related...

• by anonymoushn on 2/26/11, 11:53 AM

  This is somewhat disappointing. Python's lack of full-fledged coroutines is most of what keeps me using Lua.