def week_date_range(year: int, week_of_year: int):
date_in_week = datetime(year, 1, 1) + \
timedelta(days=(week_of_year-1)*7)
start = TimexDateHelpers.date_of_last_day(Constants.DAYS['MONDAY'],
date_in_week)
end = TimexDateHelpers.date_of_last_day(
Constants.DAYS['MONDAY'], date_in_week + timedelta(days=7))
return TimexValue.date_value(
Timex(year=start.year, month=start.month,
day_of_month=start.day)), TimexValue.date_value(
Timex(year=start.year,
month=start.month,
day_of_month=end.day))
def week_date_range(year: int, week_of_year: int):
"""Returns start and end dates of the given ISO week number of a given year"""
date_in_week = datetime(year, 1, 1)
# From Wikipedia: The ISO 8601 definition for week 01 is the week with
# the first Thursday of the Gregorian year (i.e. of January) in it.
if date_in_week.weekday() <= 3:
date_in_week -= timedelta(days=date_in_week.weekday())
else:
date_in_week += timedelta(days=7 - date_in_week.weekday())
date_in_week += timedelta(days=week_of_year * 7)
start = TimexDateHelpers.date_of_last_day(Constants.DAYS['MONDAY'],
date_in_week)
end = TimexDateHelpers.date_of_last_day(
Constants.DAYS['MONDAY'], date_in_week + timedelta(days=7))
return TimexValue.date_value(Timex(year=start.year, month=start.month, day_of_month=start.day)), \
TimexValue.date_value(Timex(year=start.year, month=start.month, day_of_month=end.day))
def last_date_value(timex: Timex, date: datetime):
if (timex.month and timex.day_of_month) is not None:
a = TimexValue.date_value(
Timex(year=date.year - 1,
month=timex.month,
day_of_month=timex.day_of_month))
return a
if timex.day_of_week is not None:
day = Constants.DAYS[
'SUNDAY'] if timex.day_of_week == 6 else timex.day_of_week
result = TimexDateHelpers.date_of_last_day(day - 1, date)
return TimexValue.date_value(
Timex(year=result.year,
month=result.month,
day_of_month=result.day))
return ''
def test_datatypes_datehelpers_dateoflastday_friday_lastweek():
day = Constants.DAYS['FRIDAY']
date = datetime(2017, 9, 28)
assert datetime(2017, 9,
22) == TimexDateHelpers.date_of_last_day(day, date)