using dateutil I was able to genrate ISO8601 of type YYYY-MM-DDThh:mm:ssTZD
but I want the format 'YYYY-MM-DDThh:mm:ss.sssTZD'
eg '2015-05-13T18:05:55.320-07:00'
My code is
from datetime import datetime
from dateutil.parser import *
from dateutil.tz import *
import dateutil
import time
ts = time.time()
utc_offset = (datetime.fromtimestamp(ts) -
datetime.utcfromtimestamp(ts)).total_seconds()
now = parse("11/10/09 11:20 PM")
now = now.replace(tzinfo=tzoffset('PDT', utc_offset))
and output is 2009-11-10T23:20:00-07:00
how would I get output like 2009-11-10T23:20:00.000-07:00
Python's datetime.strftime method can print microseconds:
ISO_FORMAT_MICROS = "%Y-%m-%dT%H:%M:%S.%f%z"
now.strftime(ISO_FORMAT_MICROS)
returns
'2009-11-10T23:20:00.000000-0700'
The milliseconds part is a little tricky. The following code is a refinement of RoadieRich's solution :
from datetime import datetime, timedelta
def datetime_to_iso(dt):
fmt = "{time.year:04}-{time.month:02}-{time.day:02}T{time.hour:02}:{time.minute:02}:{time.second:02}.{millisecond:03}{tz}"
## handle rounding up to the next second
if dt.microsecond >= 999500:
dt -= timedelta(microseconds=dt.microsecond)
dt += timedelta(seconds=1)
return fmt.format(time=dt, millisecond=int(round(dt.microsecond/1000.0)), tz=dt.strftime("%z"))
For example:
In [130]: d1 = datetime(2015,03,15,2,05,59,999999)
In [131]: datetime_to_iso(d1)
Out[131]: '2015-03-15T02:06:00.000'
In [132]: d2 = datetime(2015,03,15,2,05,59,456789)
In [133]: datetime_to_iso(d2)
Out[133]: '2015-03-15T02:05:59.457'
Use datetime.isoformat()
:
>>> now = datetime.now(tzoffset('EDT', -4*60*60))
>>> print(now.isoformat())
2015-05-15T07:08:34.478784-04:00
Note that the isoformat
method omits microseconds if the value is 0 (as in your example parsed time. If you must have factional seconds in your output use %f
in a format string:
>>> print(now.strftime("%y-%m-%dT%H:%M:%S.%f%z"))
15-05-15T07:35:00.000000-0400
If you need milli seconds, you'll have to write your own formatting routine:
def format_time_with_milliseconds(time):
fmt = "{time.year:04}-{time.month:02}-{time.day:02}T{time.hour:02}:{time.minute:02}:{time.second:02}.{millisecond:03}{tz}"
return fmt.format(time=time, millisecond=int(round(time.microsecond/1000)), tz=time.strftime("%z"))
The same format that can parse that format:
>>> from datetime import datetime
>>> ts='2015-05-13T18:05:55.320-0700'
>>> tf="%Y-%m-%dT%H:%M:%S.%f%z"
>>> dt=datetime.strptime(ts, tf)
>>> dt
datetime.datetime(2015, 5, 13, 18, 5, 55, 320000, tzinfo=datetime.timezone(datetime.timedelta(-1, 61200)))
Can also print it:
>>> dt.strftime(tf)
'2015-05-13T18:05:55.320000-0700'
Note the lack of the ':' in the tz however.
You can also use isoformat() to print your target:
>>> dt.isoformat()
2015-05-13T18:05:55.320000-07:00
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