[issue3267] yield in list comprehensions possibly broken in 3.0

Changes by Terry J. Reedy : -- superseder: -> yield expression inside generator expression does nothing ___ Python tracker ___ ___ Pyt

[issue3267] yield in list comprehensions possibly broken in 3.0

Brett Cannon <[EMAIL PROTECTED]> added the comment: Yes, this change in semantics is expected. Closing as "won't fix". -- nosy: +brett.cannon resolution: -> wont fix status: open -> closed ___ Python tracker <[EMAIL PROTECTED]>

[issue3267] yield in list comprehensions possibly broken in 3.0

Benjamin Peterson <[EMAIL PROTECTED]> added the comment: This is because list comprehensions are implemented as functions in 3.0 so their scope is not leaked out to the rest of the function. Here is the bytecode for 2.6: >>> dis.dis(f) 2 0 BUILD_LIST 0 3 D

[issue3267] yield in list comprehensions possibly broken in 3.0

New submission from Erick Tryzelaar <[EMAIL PROTECTED]>: This may be a known consequence of python 3.0, but I couldn't find any reference to it, nor a test case that covers it. Here's a valid use of yield in 2.5.1: >>> def foo(): ... x=[(yield x) for x in 1,2,3] ... yield 5 ... yield x >