Converting string into datetime
Short and simple. I've got a huge list of date-times like this as strings:
Jun 1 2005 1:33PM
Aug 28 1999 12:00AM
I'm going to be shoving these back into proper datetime fields in a database so I need to magic them into real datetime objects.
Any help (even if it's just a kick in the right direction) would be appreciated.
Edit: This is going through Django's ORM so I can't use SQL to do the conversion on insert.
datetime.strptime
is the main routine for parsing strings into datetimes. It can handle all sorts of formats, with the format determined by a format string you give it:
from datetime import datetime
datetime_object = datetime.strptime('Jun 1 2005 1:33PM', '%b %d %Y %I:%M%p')
The resulting datetime
object is timezone-naive.
Links:
Python documentation for strptime
: Python 2, Python 3
Python documentation for strptime
/ strftime
format strings: Python 2, Python 3
strftime.org is also a really nice reference for strftime
Notes:
strptime
= "string parse time" strftime
= "string format time" Use the third party dateutil library:
from dateutil import parser
dt = parser.parse("Aug 28 1999 12:00AM")
It can handle most date formats, including the one you need to parse. It's more convenient than strptime as it can guess the correct format most of the time.
It very useful for writing tests, where readability is more important than performance.
You can install it with:
pip install python-dateutil
Check out strptime in the time module. It is the inverse of strftime.
$ python
>>> import time
>>> time.strptime('Jun 1 2005 1:33PM', '%b %d %Y %I:%M%p')
time.struct_time(tm_year=2005, tm_mon=6, tm_mday=1,
tm_hour=13, tm_min=33, tm_sec=0,
tm_wday=2, tm_yday=152, tm_isdst=-1)
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