How Do I Get the Current Time?

How Do I Get the Current Time?

How do I get the current time?

2

51 Answers

Use datetime:

>>> import datetime
>>> now = datetime.datetime.now()
>>> now
datetime.datetime(2009, 1, 6, 15, 8, 24, 78915)
>>> print(now)
2009-01-06 15:08:24.789150

For just the clock time without the date:

>>> now.time()
datetime.time(15, 8, 24, 78915)
>>> print(now.time())
15:08:24.789150

To save typing, you can import the datetime object from the datetime module:

>>> from datetime import datetime

Then remove the prefix datetime. from all of the above.

8

Use time.strftime():

>>> from time import gmtime, strftime
>>> strftime("%Y-%m-%d %H:%M:%S", gmtime())
'2009-01-05 22:14:39'
6
from datetime import datetime
datetime.now().strftime('%Y-%m-%d %H:%M:%S')

Example output: '2013-09-18 11:16:32'

See list of strftime directives.

0

Similar to Harley's answer, but use the str() function for a quick-n-dirty, slightly more human readable format:

>>> from datetime import datetime
>>> str(datetime.now())
'2011-05-03 17:45:35.177000'
6

How do I get the current time in Python?

The time module

The time module provides functions that tell us the time in "seconds since the epoch" as well as other utilities.

import time

Unix Epoch Time

This is the format you should get timestamps in for saving in databases. It is a simple floating-point number that can be converted to an integer. It is also good for arithmetic in seconds, as it represents the number of seconds since Jan 1, 1970, 00:00:00, and it is memory light relative to the other representations of time we'll be looking at next:

>>> time.time()
1424233311.771502

This timestamp does not account for leap-seconds, so it's not linear - leap seconds are ignored. So while it is not equivalent to the international UTC standard, it is close, and therefore quite good for most cases of record-keeping.

This is not ideal for human scheduling, however. If you have a future event you wish to take place at a certain point in time, you'll want to store that time with a string that can be parsed into a datetime object or a serialized datetime object (these will be described later).

time.ctime

You can also represent the current time in the way preferred by your operating system (which means it can change when you change your system preferences, so don't rely on this to be standard across all systems, as I've seen others expect). This is typically user friendly, but doesn't typically result in strings one can sort chronologically:

>>> time.ctime()
'Tue Feb 17 23:21:56 2015'

You can hydrate timestamps into human readable form with ctime as well:

>>> time.ctime(1424233311.771502)
'Tue Feb 17 23:21:51 2015'

This conversion is also not good for record-keeping (except in text that will only be parsed by humans - and with improved Optical Character Recognition and Artificial Intelligence, I think the number of these cases will diminish).

James H. Sterling
Author

James H. Sterling

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.