[Datetime-SIG] local and utc time/date in python

Aug. 23, 2016

      Hi, Python date time experts,

summary for getting UTC time in sec:

print time.time()
print calendar.timegm(time.gmtime())
print time.mktime(time.localtime())
print calendar.timegm(datetime.datetime.utcnow().timetuple())
print time.mktime(datetime.datetime.now().timetuple())

Are all the functions above expected?

See code below:

###################################################

"""Try the time date util for local and gm.
Usage:
$ date -u +%s && python aa.py
1471980937
* time:
time.struct_time(tm_year=2016, tm_mon=8, tm_mday=23, tm_hour=19, tm_min=35,
tm_sec=37, tm_wday=1, tm_yday=236, tm_isdst=0) time.gmtime()
1472009737.0 time.mktime
1471980937 calendar.timegm <-- right
time.struct_time(tm_year=2016, tm_mon=8, tm_mday=23, tm_hour=12, tm_min=35,
tm_sec=37, tm_wday=1, tm_yday=236, tm_isdst=1) time.localtime()
1471980937.0 time.mktime <-- right
1471955737 calendar.timegm
* datetime.utcnow():
time.struct_time(tm_year=2016, tm_mon=8, tm_mday=23, tm_hour=19, tm_min=35,
tm_sec=37, tm_wday=1, tm_yday=236, tm_isdst=-1) datetime.utcnow()
1472006137.0 time.mktime
1471980937 calendar.timegm <-- right
time.struct_time(tm_year=2016, tm_mon=8, tm_mday=23, tm_hour=12, tm_min=35,
tm_sec=37, tm_wday=1, tm_yday=236, tm_isdst=-1) datetime.now()
1471980937.0 time.mktime <-- right
1471955737 calendar.timegm
* summary for getting UTC time in sec:
1471980937.24
1471980937
1471980937.0
1471980937
1471980937.0
"""
import calendar
import datetime
import time
def to_timestamp(dt):
return calendar.timegm(dt.timetuple())
def to_timestamp2(dt):
return time.mktime(dt.timetuple())
print '\n* time:'
gmt = time.gmtime()
localt = time.localtime()
utc_now = datetime.datetime.utcnow()
local_now = datetime.datetime.now()
print gmt, '\t time.gmtime()'
print time.mktime(gmt), '\t time.mktime'
print calendar.timegm(gmt), '\t calendar.timegm <-- right'
print localt, '\t time.localtime()'
print time.mktime(localt), '\t time.mktime <-- right'
print calendar.timegm(localt), '\t calendar.timegm'
print '\n* datetime.utcnow():'
print utc_now.timetuple(), '\t datetime.utcnow()'
print to_timestamp2(utc_now), '\t time.mktime'
print to_timestamp(utc_now), '\t calendar.timegm <-- right'
print local_now.timetuple(), '\t datetime.now()'
print to_timestamp2(local_now), '\t time.mktime <-- right'
print to_timestamp(local_now), '\t calendar.timegm'
print '\n* summary for getting UTC time in sec:'
print time.time()
print calendar.timegm(time.gmtime())
print time.mktime(time.localtime())
print calendar.timegm(datetime.datetime.utcnow().timetuple())
print time.mktime(datetime.datetime.now().timetuple())

###################################################

-- 
Lenjoy