Another simple datetime+struct_time class

korakot (Korakot Chaovavanich) — Mon, 13 Mar 2006 21:08:56 GMT

I had shown how datetime can be used in python 2.2
in a previous snippet. Still, it's sometimes too big.

Here's a minimal implementation. It works like both
datetime and stuct_time (as returned by localtime() and gmtime()).



import time



class datetime(object):

    def __init__(self, *argv):

        self.t = time.struct_time(argv+(0,)*(9-len(argv)))    # append to length 9 

    def __getattr__(self, name):

        try:

            i = ['year', 'month', 'day', 'hour', 'minute', 'second', 'weekday'].index(name)

            return self.t[i]

        except:

            return getattr(self.t, name)

    def __len__(self): return len(self.t)

    def __getitem__(self, key): return self.t[key]

    def __repr__(self): return repr(self.t)

    def now(self=None):

        return datetime(*time.localtime())

    now = staticmethod(now)

    def strftime(self, fmt="%Y-%m-%d %H:%M:%S"):

        return time.strftime(fmt, self.t)

Here's its usage



# here it works like datetime.datetime()

>>> t = datetime.now()

>>> t.year, t.month, t.day

(2006, 3, 13)

>>> t.hour, t.minute, t.second

(23, 3, 28)



# but also works like localtime()

>>> t

(2006, 3, 13, 23, 3, 28, 0, 72, -1)

>>> t.tm_year, t[0]

(2006, 2006)

>>> mktime(t)

1142265808.0



# good default for strftime (= ctime)

>>> t.strftime()

'2006-03-13 23:03:28'

Time module

korakot (Korakot Chaovavanich) — Wed, 21 Dec 2005 20:08:55 GMT



>>> from time import time, localtime, strftime

>>> time()             # seconds since the epoch

1135156165.5569999

>>> localtime()[0:3]   # date

(2005, 12, 21)

>>> localtime()[3:6]   # time

(16, 9, 27)

>>> strftime("%d %b %Y %H:%M:%S", localtime())

'21 Dec 2005 16:09:27'

>>>

See more detail in python documentation

DZone Snippets: localtime code

Another simple datetime+struct_time class

Time module