R. David Murray added the comment: exec is subtle. See the explanation linked from issue 23087, which while not *exactly* on point explains the underlying problem (a comprehension is a new scope, and exec can't reach an intermediate scope the way a compiled function can).
As far as the difference from 2.7 goes, the scoping rules for comprehensions changed in python3: the variable you are concerned with is now part of the local scope. ---------- nosy: +r.david.murray resolution: -> not a bug stage: -> resolved status: open -> closed superseder: -> Exec variable not found error _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue24800> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com