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def _calc_daycount(y, m, d):
daysBeforeMonthTab = []
b = 0
for _d in (31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31):
daysBeforeMonthTab.append(b)
b += _d
daysBeforeYear = (y - 1) * 365 + (y - 1) // 4 - (y - 1) // 100 + (y - 1) // 400
leap = y % 4 == 0 and (y % 100 != 0 or y % 400 == 0)
daysBeforeMonth = daysBeforeMonthTab[m - 1] + (1 if (m > 2 and leap) else 0)
return daysBeforeYear + daysBeforeMonth + d
def _calc_weekday(y, m, d):
return (_calc_daycount(y, m, d) + 6) % 7
class date(object):
def __init__(self, year, month, day):
self.year = year
self.month = month
self.day = day
def __add__(self, other):
#TODO
return timedelta()
def __sub__(self, other):
if isinstance(other, date):
return timedelta(_calc_daycount(self.year, self.month, self.day) -
_calc_daycount(other.year, other.month, other.day))
#TODO
return timedelta()
def weekday(self):
return _calc_weekday(self.year, self.month, self.day)
class datetime(object):
def __init__(self, year=0, month=0, day=0,
hour=0, minute=0, second=0, microsecond=0, tzinfo=None):
self.year = year
self.month = month
self.day = day
self.hour = hour
self.minute = minute
self.second = second
self.microsecond = microsecond
self.tzinfo = tzinfo
def __add__(self, other):
#TODO
return timedelta()
def __sub__(self, other):
#TODO
return timedelta()
@classmethod
def now(cls, tz=None):
#TODO
return cls.utcnow()
@classmethod
def utcnow(cls):
#TODO
return cls()
@classmethod
def strptime(cls, date_string, format):
#TODO
pass
def weekday(self):
return _calc_weekday(self.year, self.month, self.day)
class timedelta(object):
def __init__(self, days=0, seconds=0, microseconds=0):
self.days = days
self.seconds = seconds
self.microseconds = microseconds
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