On Thu, Jan 7, 2010 at 12:07 AM, Joshua Kordani <jkord...@intlogsys.com> wrote: > Greetings all! > > So I'm reading through the manual and I get to the point where it talks > about packages and how to import them. namely section 6.4 in the tutorial. > I wont repeat the section here, but I want to understand whats going on in > the following (as typed on my computer). > > Python 2.6.4 (r264:75708, Oct 26 2009, 08:23:19) [MSC v.1500 32 bit (Intel)] > on > win32 > Type "help", "copyright", "credits" or "license" for more information. >>>> import datetime >>>> dir(datetime) > ['MAXYEAR', 'MINYEAR', '__doc__', '__name__', '__package__', 'date', > 'datetime', > 'datetime_CAPI', 'time', 'timedelta', 'tzinfo'] >>>> dir(datetime.datetime) > ['__add__', '__class__', '__delattr__', '__doc__', '__eq__', '__format__', > '__ge > __', '__getattribute__', '__gt__', '__hash__', '__init__', '__le__', > '__lt__', ' > __ne__', '__new__', '__radd__', '__reduce__', '__reduce_ex__', '__repr__', > '__rs > ub__', '__setattr__', '__sizeof__', '__str__', '__sub__', > '__subclasshook__', 'a > stimezone', 'combine', 'ctime', 'date', 'day', 'dst', 'fromordinal', > 'fromtimest > amp', 'hour', 'isocalendar', 'isoformat', 'isoweekday', 'max', > 'microsecond', 'm > in', 'minute', 'month', 'now', 'replace', 'resolution', 'second', > 'strftime', 's > trptime', 'time', 'timetuple', 'timetz', 'today', 'toordinal', 'tzinfo', > 'tzname > ', 'utcfromtimestamp', 'utcnow', 'utcoffset', 'utctimetuple', 'weekday', > 'year'] > >>>> from datetime.datetime import today > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > ImportError: No module named datetime >>>> > > so dir on datetime shows symbols date, time, datetime,etc > dir on datetime shows today, now, etc > > lets say for arguments sake that I want to just import the today function, > according to the documentation, the line should be: > from datetime.datetime import today. > > as you can see, that didn't work. why not? >
>>> import datetime >>> type(datetime.datetime) <type 'type'> datetime.datetime is a type (so it's a class), not a module and today is an attribute of that type. You can't import from a class. -- http://mail.python.org/mailman/listinfo/python-list
