tree 14101bd8c629aad1d3ae7cf77e1946516ddeba80
parent 6a89481680b921e7b317c29877bdda9a6031e5ad
author Serhiy Storchaka <storchaka@gmail.com> 1512104057 +0200
committer Nick Coghlan <ncoghlan@gmail.com> 1512104057 +1000

bpo-10544: Deprecate "yield" in comprehensions and generator expressions. (GH-4579)

The current behaviour of yield expressions inside comprehensions  and
generator expressions is essentially an accident of implementation - it
arises implicitly from the way the compiler handles yield expressions inside
nested functions and generators.

Since the current behaviour wasn't deliberately designed, and is inherently
confusing, we're deprecating it, with no current plans to reintroduce it.
Instead, our advice will be to use a named nested generator definition
for cases where this behaviour is desired.