Add typing.Generator #642

Activity

1. JukkaL

   added

   feature

   topic-pep-484

   on Apr 17, 2015
2. spkersten commented on May 2, 2015

   

   spkersten

   on May 2, 2015

   Contributor

   More actions

   I'm trying to implement this (see my generator branch for progress). Should Iterator still be allowed as return type of a function in case Generator's send_type and return_type are None?
3. JukkaL commented on May 3, 2015

   

   JukkaL

   on May 3, 2015

   CollaboratorAuthor

   More actions

   If a function has Generator as the return type, it should not return an Iterator, as Iterator may not have the send and throw methods.
4. gvanrossum commented on Jan 13, 2016

   

   gvanrossum

   on Jan 13, 2016

   Member

   More actions

   See also #695 and #1011 (at least one of these three is a duplicate).

   FWIW I think Sander's question is whether this is still allowed:

   def foo() -> Iterator[int]:
       yield 0
   

   or whether all generators must be declared as Generator. I believe this example should still be valid (but callers should not call send() or throw().)
5. JukkaL commented on Jan 14, 2016

   

   JukkaL

   on Jan 14, 2016

   CollaboratorAuthor

   More actions

   Yeah, an Iterator return type should still be fine. I was confused above about the question.
6. gvanrossum commented on Jan 15, 2016

   

   gvanrossum

   on Jan 15, 2016

   Member

   More actions

   Also closed by #1128.
7. gvanrossum

   closed this as completedon Jan 15, 2016