Issue2166

Support for %f (microseconds) directive was added in Python 2.6. On Jython 2.7 beta 2 it seems to be supported with datetime.strftime, but with datetime.strptime microseconds are silently ignored.

Jython 2.7b2 (default:a5bc0032cf79+, Apr 22 2014, 21:20:17) 
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.7.0_55
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>>> from datetime import datetime
>>> datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f')
'2014-06-16 17:03:58.483000'
>>> datetime.strptime('2014-06-16 17:03:58.483000', '%Y-%m-%d %H:%M:%S.%f')
datetime.datetime(2014, 6, 16, 17, 3, 58)

I think this was fixed along with issue 2112.

It's easily tested.
>>> from datetime import datetime
>>> fmt = '%Y-%m-%d %H:%M:%S.%f'
>>> t = datetime.now(); s = datetime.strptime(t.strftime(fmt), fmt); t-s
datetime.timedelta(0, 0, 476999)
>>> t.strftime(fmt)
'2014-08-11 21:20:33.476999'

With CPython I get:
>>> t = datetime.now(); s = datetime.strptime(t.strftime(fmt), fmt); t-s
datetime.timedelta(0)

Although it surprises me in that case that test_strptime passes (without skips).

Note:  https://github.com/jythontools/jython/pull/7 (from PyCon AU, not me!)

Fixed as of https://hg.python.org/jython/rev/daa6bf9a14d5