SilentGhost added the comment: At the time the len function in list comprehension is called .append has not executed, the len call in list comprehension operates on object as it is, whereas the object itself is only referenced rather than copied. If you were to copy the yielded list, then a more expected behaviour of returning [([], 0)] would be demonstrated.
---------- nosy: +SilentGhost resolution: -> not a bug stage: -> resolved status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27707> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
