Generate RFC 3339 timestamp in Python [duplicate]

Answer 1

You can indeed use the built-in datetime module. As @ruakh mentions, there are examples in the page that show how. If you look into the section on tzinfo you'll see a long example showing many different use cases. Here's the code for the one you're looking for, which is to generate an RFC 3339 UTC timestamp.

from datetime import tzinfo, timedelta, datetime
import time as _time

ZERO = timedelta(0)
STDOFFSET = timedelta(seconds=-_time.timezone)
if _time.daylight:
    DSTOFFSET = timedelta(seconds=-_time.altzone)
else:
    DSTOFFSET = STDOFFSET

DSTDIFF = DSTOFFSET - STDOFFSET


class LocalTimezone(tzinfo):

    def utcoffset(self, dt):
        if self._isdst(dt):
            return DSTOFFSET
        else:
            return STDOFFSET

    def dst(self, dt):
        if self._isdst(dt):
            return DSTDIFF
        else:
            return ZERO

    def tzname(self, dt):
        return _time.tzname[self._isdst(dt)]

    def _isdst(self, dt):
        tt = (dt.year, dt.month, dt.day,
              dt.hour, dt.minute, dt.second,
              dt.weekday(), 0, 0)
        stamp = _time.mktime(tt)
        tt = _time.localtime(stamp)
        return tt.tm_isdst > 0

Local = LocalTimezone()

d = datetime.now(Local)
print d.isoformat('T')

# which returns
# 2014-04-28T15:44:45.758506-07:00