from datetime import date
yesterday = date.fromordinal(date.today().toordinal()-1).strftime('%Y-%m-%d')
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import dateutil.parser # http://labix.org/python-dateutil (for google app engine put the source directory at the root project level)
myd = 'Thu, 11 Jul 2013 05:01:21 -0700'
datetime_obj = dateutil.parser.parse( myd )
def seconds_to_datetime( t ):
return datetime.datetime.fromtimestamp( int( t ) )
def datetime_string_to_seconds( date_str ):
datetime_obj = dateutil.parser.parse( date_str) # Thu, 11 Jul 2013 05:01:21 -0700
return Utility.datetime_to_seconds( datetime_obj )
def datetime_to_seconds( datetime_obj ):
return int( time.mktime( datetime_obj.timetuple() ) )
import pytz # sometimes requires complex installation, easy_install --upgrade pytz
from datetime import datetime
print datetime.datetime.now()
utc = pytz.timezone("UTC")
print utc
date_utc = datetime.datetime.now( pytz.timezone( "UTC" ) ).strftime( "%Y-%m-%d" )
print date_utc
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import time
mytime = time.strptime("Mon Apr 07 13:05:55 PDT 2014", "%a %b %d %H:%M:%S %Z %Y")
# time.struct_time(tm_year=2014, tm_mon=4, tm_mday=7, tm_hour=13, tm_min=5, tm_sec=55, tm_wday=0, tm_yday=97, tm_isdst=1)
time.mktime(mytime) # 1396901155.0
print time.strftime("%Y-%m-%d %H:%M:%S", mytime) # 2014-04-07 13:05:55
time_tuple = (2008, 11, 12, 13, 51, 18, 2, 317, 0)
print time.strftime("%Y-%m-%d %H:%M:%S", time_tuple) # 2008-11-10 17:53:59
import datetime
date_object = datetime.datetime(2008, 11, 10, 17, 53, 59)
print date_object.strftime("%Y-%m-%d %H:%M:%S") # 2008-11-10 17:53:59
timestamp = 1226527167.595983
print repr( datetime.fromtimestamp( timestamp ) ) # repr prints with limits on sizes of objects
import calendar
time_tuple_utc = (2008, 11, 12, 13, 59, 27, 2, 317, 0) # time tuple in utc time to timestamp
timestamp_utc = calendar.timegm(time_tuple_utc)
print repr(timestamp_utc)
#-------------------------------------------------
time_tuple = (2008, 11, 12, 13, 51, 18, 2, 317, 0)
datetime_object = datetime(*time_tuple[0:6])
print repr(datetime_object)
date_string = "2008-11-10 17:53:59"
datetime_object = datetime.strptime(date_string, "%Y-%m-%d %H:%M:%S")
print repr(datetime_object)
timestamp = 1226527167.595983
datetime_object = datetime.fromtimestamp(timestamp) # local time
print repr(datetime_object)
timestamp = 1226527167.595983
datetime_object = datetime.utcfromtimestamp(timestamp)
print repr(datetime_object)
#-------------------------------------------------
# conversions to time tuples
datetime_object = datetime(2008, 11, 10, 17, 53, 59)
time_tuple = datetime_object.timetuple()
print repr(time_tuple)
date_str = "2008-11-10 17:53:59"
time_tuple = time.strptime(date_str, "%Y-%m-%d %H:%M:%S")
print repr(time_tuple)
timestamp = 1226527167.595983
local_time_tuple = time.localtime(timestamp) # local time
print repr(local_time_tuple)
utc_time_tuple = time.gmtime(timestamp) # UTC
print repr(utc_time_tuple)
#-------------------------------------------------
# conversions to timestamps
# time tuple in local time to timestamp
time_tuple = (2008, 11, 12, 13, 59, 27, 2, 317, 0)
timestamp = time.mktime(time_tuple)
print repr(timestamp)
# time tuple in utc time to timestamp
time_tuple_utc = (2008, 11, 12, 13, 59, 27, 2, 317, 0)
timestamp_utc = calendar.timegm(time_tuple_utc)
print repr(timestamp_utc)
#-------------------------------------------------
# results
#-------------------------------------------------
# 2008-11-10 17:53:59
# 2008-11-12 13:51:18
# datetime.datetime(2008, 11, 12, 13, 51, 18)
# datetime.datetime(2008, 11, 10, 17, 53, 59)
# datetime.datetime(2008, 11, 12, 13, 59, 27, 595983)
# datetime.datetime(2008, 11, 12, 21, 59, 27, 595983)
# (2008, 11, 10, 17, 53, 59, 0, 315, -1)
# (2008, 11, 10, 17, 53, 59, 0, 315, -1)
# (2008, 11, 12, 21, 59, 27, 2, 317, 0)
# (2008, 11, 12, 13, 59, 27, 2, 317, 0)
# 1226527167.0
# 1226498367