Convert RFC2822 Date Format to Python's datetime
2011-06-08 01:23 (13 years ago)
ytyng
# -*- coding: utf-8 -*-
"""
Function to convert RFC2822 format date to Python's datetime
Sun, 05 Jun 2011 05:32:25 +0000
Wed, 08 Jun 2011 01:21:23 +0900
Execution result:
2011-06-08 01:21:23.824852
Wed, 08 Jun 2011 01:21:23 +0900
2011-06-08 01:21:23+09:00
Wed, 08 Jun 2011 01:21:23 +0900
Reference: http://mitc.xrea.jp/diary/096
"""
import datetime
import email.utils
def parse_date_string_to_datetime(date_string_rfc822):
"""
Parse an RFC2822 formatted date and convert it to
a JST aware datetime
"""
timetuple = email.utils.parsedate_tz(date_string_rfc822)
d = datetime.datetime(*timetuple[:7]) # native
d -= datetime.timedelta(seconds=timetuple[-1])
d = d.replace(tzinfo=UTC()).astimezone(JST())
return d # aware
class UTC(datetime.tzinfo):
def utcoffset(self, dt):
return datetime.timedelta(0)
def dst(self, dt):
return datetime.timedelta(0)
def tzname(self, dt):
return "UTC"
class JST(datetime.tzinfo):
def utcoffset(self,dt):
return datetime.timedelta(hours=9)
def dst(self,dt):
return datetime.timedelta(0)
def tzname(self,dt):
return "JST"
def demo():
# test
now = datetime.datetime.now()
print(now)
s = now.strftime("%a, %d %b %Y %H:%M:%S +0900") # can't use %z because it's native
print s
parsed = parse_date_string_to_datetime(s)
print(parsed)
print(parsed.strftime("%a, %d %b %Y %H:%M:%S %z")) # can use %z because it's aware
if __name__ == '__main__':
demo()
The author runs the application development company Cyberneura.
We look forward to discussing your development needs.
We look forward to discussing your development needs.
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