[issue13284] email.utils.formatdate function does not handle timezones correctly.
Vitja Makarov vitja.maka...@gmail.com added the comment: Perhaps it's better to calculate utc-offset for each timestamp cause we never know what is correct timezone for given time. That could be done in C: localtime, utc_offset = time.localtime_ex(t) Where localtime is the same as returned by localtime() and utc_offset is set to tm.tm_gmtoff. If tm_gmtoff isn't available on the target platform time.timezone or time.altzone will be used depending on time.daylight. Here is simple python version, that subtracts gmtime from localtime tuple: import time def calculate_utc_offset(t): Returns localtime offset for given unix-time `t` loco = time.localtime(t) utc = time.gmtime(t) odd = cmp(loco.tm_year, utc.tm_year) or cmp(loco.tm_yday, utc.tm_yday) return (1440 * odd + 60 * (loco.tm_hour - utc.tm_hour) + loco.tm_min - utc.tm_min)) -- versions: +Python 2.6, Python 3.1, Python 3.2, Python 3.3, Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13284 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13284] email.utils.formatdate function does not handle timezones correctly.
Vitja Makarov vitja.maka...@gmail.com added the comment: I'm not quite sure. The problem is email.utils.formatdate doesn't respect TZ info changes since it uses time.timezone (or time.altzone) for utc offset. Btw it seems that issue 665194 should fix the problem. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13284 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13284] email.utils.formatdate function does not handle timezones correctly.
Vitja Makarov vitja.maka...@gmail.com added the comment: We have the same issue in Russia (MSK timezone). It seems to be related to recent changes in timezone info. It looks like time.timezone is calculated incorrectly. You can test that with attached script: $ TZ=Europe/Moscow python /tmp/test_tz.py -10800 -14400 Both values should be the same. -- nosy: +Vitja.Makarov Added file: http://bugs.python.org/file23605/test_tz.py ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13284 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
