i been had worked with dates. I want to convert datetimes to ordinal but my script fails.
from datetime import datetime
date = "2016/12/07 17:45"
date_strip = datetime.strptime(date, '%Y/%m/%d %H:%M').date()
ordinal = date_strip.toordinal()
# ordinal = 736305
normal_date = datetime.fromordinal(ordinal)
# normal_date = 2016-12-07 00:00:00 not 2016-12-07 17:45:00
whats wrong? ca they help me please?
Because ordinal stores just the date. the ordinal cannot contain the time:
the proleptic Gregorian ordinal of the date, where January 1 of year 1 has ordinal 1. For any date object d, date.fromordinal(d.toordinal()) == d.
If you want to convert to/from timestamps instead of ordinals, try this so answer.
datetime.date() returns date object with same year, month and day, but not the hour, minute and second, i.e day resolution. It can be easily seen below.
>>> from datetime import datetime
>>> s = "2016/12/07 17:45"
>>> d = datetime.strptime(s, '%Y/%m/%d %H:%M').date()
>>> type(d)
<type 'datetime.date'>
Notice that datetime.toordinal is the same as self.date().toordinal().
>>> from datetime import datetime
>>> dt = datetime.strptime('2016/12/07 17:45', '%Y/%m/%d %H:%M')
>>> dt.toordinal() == dt.date().toordinal()
True
