Get JST current time in ISO 8601 notation

#ISO 8601 basic notation example) "20140526T123456+0900"
jstnow().strftime('%Y%m%dT%H%M%d%z')
#ISO 8601 extended notation example) "2014-05-26T12:34:56+0900"
jstnow().strftime('%Y-%m-%dT%H:%M:%d%z')
#ISO 8601 extended notation example) "2014-05-26T12:34:56.123000+0900"
jstnow().isoformat()
from datetime import *

def jstnow():
  # JST timezone(+0900)
  class JST(tzinfo):
    def utcoffset(self, dt):
      return timedelta(hours=9)
    def dst(self, dt):
      return timedelta(0)
  return datetime.now(JST())

Implementation that explicitly calculates the difference from UTC

from datetime import *

def jstnow():
  # UTC tzinfo
  class UTC(tzinfo):
    def utcoffset(self, dt):
      return timedelta(hours=0)
    def dst(self, dt):
      return timedelta(0)
  # JST timezone(+0900)
  class JST(tzinfo):
    def utcoffset(self, dt):
      return timedelta(hours=9)
    def dst(self, dt):
      return timedelta(0)
  return datetime.utcnow().replace(tzinfo=UTC()).astimezone(JST())

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