Hi Brett, On 6 March 2015 at 19:11, Brett Cannon <br...@python.org> wrote: > I disagree with your premise that .pyo files don't have a noticeable effect > on performance. If you don't use asserts a lot then there is no effect, but > if you use them heavily or have them perform expensive calculations then > there is an impact.
Maybe you'd be interested to learn that PyPy (at least the 2.x branch) uses a new bytecode, JUMP_IF_NOT_DEBUG, to conditionally jump over the "assert" line. In "optimized" mode PyPy follows the jumps; in "non-optimized" mode it doesn't. This mode is initialized with the -O flag but can be changed dynamically, as the bytecode is the same. We introduced it as a simple solution to the mess of .pyc versus .pyo. (We didn't consider the case of -OO very closely because PyPy is much bigger than CPython as a binary to start with, so the demand for that is lower.) A bientôt, Armin. _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
