New submission from Serhiy Storchaka <storchaka+cpyt...@gmail.com>: _PyCode_ConstantKey() wraps a constant into a tuple that contains other items besides the wrapped object. This makes booleans different from 0 and 1, makes numbers of different type different (1, 1.0 and 1.0+0j), makes floating point zeros with different signs different (0.0 and -0.0), and avoids a ByteWarning from comparing strings and bytes.
But for some types objects are always different from objects of other types and from tuples. _PyCode_ConstantKey() can be made faster and using less memory if return the object of these types unwrapped. ---------- components: Interpreter Core messages: 315407 nosy: serhiy.storchaka priority: normal severity: normal status: open title: Return an object itself for some types in _PyCode_ConstantKey() type: performance versions: Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33299> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
