New submission from Serhiy Storchaka: When C code needs to compare Python object with int 0 or add int 1 it either use local reference to PyLong_FromLong(0) and PyLong_FromLong(1) which should be decrefed just after use or module level global variable initialized and cleared during initializing and finalizing the module.
Proposed patch adds global variables _PyLong_Zero and _PyLong_One for references to integer objects 0 and 1. This simplifies the code since no need to initialize local variables, check for error the result of PyLong_FromLong() and decref it after use. The patch decreases the total code size by 244 lines. That variables are only for internal use. User code should use PyLong_FromLong(0) and PyLong_FromLong(1). ---------- components: Interpreter Core files: long-constants.diff keywords: patch messages: 289974 nosy: haypo, mark.dickinson, serhiy.storchaka priority: normal severity: normal stage: patch review status: open title: Add global instances of int 0 and 1 type: enhancement versions: Python 3.7 Added file: http://bugs.python.org/file46751/long-constants.diff _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue29878> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
