[issue11682] PEP 380 reference implementation for 3.3
Nick Coghlan
report at bugs.python.org
Wed Nov 9 11:17:04 CET 2011
Nick Coghlan <ncoghlan at gmail.com> added the comment:
In reviewing Zbyszek's doc updates and comparing them against the Grammar, I discovered a gratuitous change in the implementation: it allows a bare (i.e. no parentheses) 'yield from' as an argument to a function, even when there's multiple arguments. By contrast, an ordinary yield expression requires parentheses everywhere other than when it's being used as a statement, or as the sole expression on the RHS of an assignment.
I'll add a new test to ensure "yield from x" requires parentheses whenever "yield x" requires them (and fix the Grammar file on the implementation branch accordingly).
I've also pushed a fix to the branch for the refleak Yury pointed out (once I actually ran regrtest in refleak hunting mode it also pointed out that there was a problem, so I know his suggested change definitely fixed it).
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