Bugs item #1553496, was opened at 2006-09-06 16:03 Message generated for change (Comment added) made by vsajip You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1553496&group_id=5470
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: Python 2.5 >Status: Closed >Resolution: Invalid Priority: 5 Submitted By: Walker Hale (walkerh) Assigned to: Vinay Sajip (vsajip) Summary: logging.handlers.RotatingFileHandler - inconsistent mode Initial Comment: RotatingFileHandler does not remember the mode used to open files. By default it will initially open its file with 'a', but client code may set this to something else. After rollover, the mode for the new file changes to 'w'. The behavior is inconsistent with the interface. At the very least the docstring for __init__ should change to show that the mode parameter is not respected after rollover. This affects previous versions. ---------------------------------------------------------------------- >Comment By: Vinay Sajip (vsajip) Date: 2006-09-11 22:31 Message: Logged In: YES user_id=308438 I don't feel that the current behaviour is inconsistent, because you normally want the current log file to be appended to, when the program starts. (Of course, you can override this to specify "w" and start with a new file for every run.) However, when you rollover, you want the new file to be truncated, and not have new log messages appended to existing data. Hence, "a" is used at first, and "w" at rollover. Remember, the log file before rollover (e.g. test.log) is renamed to test.log.n, and rolled-over output goes into test.log. Since the original test.log is now test.log.n, what does it mean to open test.log with "a"? Since test.log does not exist, opening with "w" and "a" are equivalent. If you spot a flaw in this reasoning, please re-open and give a more detailed scenario which explains exactly why the current behaviour is causing you a problem. In particular, it would help if you could walk me through a scenario which shows how the system would behave observably differently if "a" were used instead of "w" at rollover. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1553496&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
