New submission from Mark Shannon <m...@hotpy.org>: The six complex bytecodes currently used for implementing 'with' and 'try' statements can be replaced with just two simpler bytecodes. The six bytecodes are WITH_CLEANUP_START, WITH_CLEANUP_FINISH, BEGIN_FINALLY, END_FINALLY, CALL_FINALLY and POP_FINALLY. They can be replaced with RERAISE and WITH_EXCEPT_FINISH.
See https://bugs.python.org/issue32949 for more details of the new bytecodes and how they are used in the 'with' statement. The try-finally statement can be implemented broadly as SETUP_FINALLY except try-body POP_BLOCK finally-body JUMP exit except: finally-body exit: ---------- components: Interpreter Core messages: 315905 nosy: Mark.Shannon priority: normal severity: normal status: open title: Simplify bytecodes for try-finally, try-except and with blocks. versions: Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33387> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
