Posts tagged "datetime" « SaltyCrane Blog

How to get the date N days ago in Python

l Date: 2010-10-16 | Tags: datetime, python

from datetime import datetime, timedelta

N = 2

date_N_days_ago = datetime.now() - timedelta(days=N)

print datetime.now()
print date_N_days_ago

Results:

2010-10-16 00:06:06.000201
2010-10-14 00:06:06.000107

For more information see the timedelta documentation

Converting time zones for datetime objects in Python

l Date: 2009-05-05 | Tags: datetime, python | 4 Comments

Install pytz

I am using pytz, which is a time zone definitions package. You can install it using Easy Install. On Ubuntu, do this:

sudo easy_install --upgrade pytz

Add time zone information to a naive datetime object

from datetime import datetime
from pytz import timezone

date_str = "2009-05-05 22:28:15"
datetime_obj = datetime.strptime(date_str, "%Y-%m-%d %H:%M:%S")
datetime_obj_utc = datetime_obj.replace(tzinfo=timezone('UTC'))
print datetime_obj_utc.strftime("%Y-%m-%d %H:%M:%S %Z%z")

Results:

2009-05-05 22:28:15 UTC+0000

Convert time zones

from datetime import datetime
from pytz import timezone

fmt = "%Y-%m-%d %H ...

Python datetime / time conversions

l Date: 2008-11-12 | Tags: datetime, python | 8 Comments

from datetime import datetime
import time

#-------------------------------------------------
# conversions to strings
#-------------------------------------------------
# datetime object to string
dt_obj = datetime(2008, 11, 10, 17, 53, 59)
date_str = dt_obj.strftime("%Y-%m-%d %H:%M:%S")
print date_str

# time tuple to string
time_tuple = (2008, 11, 12, 13, 51, 18, 2, 317, 0)
date_str = time.strftime("%Y-%m-%d %H:%M:%S", time_tuple)
print date_str

#-------------------------------------------------
# conversions to datetime objects
#-------------------------------------------------
# time tuple to datetime object
time_tuple = (2008, 11, 12, 13, 51, 18, 2, 317, 0)
dt_obj = datetime(*time_tuple[0:6])
print repr(dt_obj)

# date string to datetime object
date_str = "2008-11-10 17:53:59"
dt_obj = datetime.strptime(date_str, "%Y- ...

How to get the current date and time in Python

l Date: 2008-06-26 | Modified: 2008-09-09 | Tags: datetime, python | 20 Comments

Here is an example of how to get the current date and time using the datetime module in Python:

import datetime

now = datetime.datetime.now()

print
print "Current date and time using str method of datetime object:"
print str(now)

print
print "Current date and time using instance attributes:"
print "Current year: %d" % now.year
print "Current month: %d" % now.month
print "Current day: %d" % now.day
print "Current hour: %d" % now.hour
print "Current minute: %d" % now.minute
print "Current second: %d" % now.second
print "Current microsecond: %d" % now.microsecond

print
print "Current date and time using strftime:"
print ...