def end_time(self):
std_units = Settings.get_solo().standard_time_units
end_times = self.obs_files.values_list('end_time', 'time_units',
'calendar')
if not end_times:
return None
std_times = [
(standardise_time_unit(time, unit, std_units, cal), cal)
for time, unit, cal in end_times
]
none_values_removed = [(std_time, cal)
for std_time, cal in std_times
if std_time is not None]
if not none_values_removed:
return None
latest_time, calendar = max(none_values_removed, key=lambda x: x[0])
latest_obj = cf_units.num2date(latest_time, std_units, calendar)
return latest_obj
def test_same_units(self):
time_unit = 'days since 2000-01-01'
time_num = 3.14159
actual = standardise_time_unit(time_num, time_unit, time_unit,
'360_day')
assert_almost_equal(actual, time_num)
def start_time(self):
std_units = Settings.get_solo().standard_time_units
start_times = self.datafile_set.values_list('start_time', 'time_units',
'calendar')
if not start_times:
return None
std_times = [
(standardise_time_unit(time, unit, std_units, cal), cal)
for time, unit, cal in start_times
]
none_values_removed = [(std_time, cal)
for std_time, cal in std_times
if std_time is not None]
if not none_values_removed:
return None
earliest_time, calendar = min(none_values_removed, key=lambda x: x[0])
earliest_obj = cf_units.num2date(earliest_time, std_units, calendar)
return earliest_obj.strftime('%Y-%m-%d')
def test_different_units(self):
old_unit = 'days since 2000-01-01'
new_unit = 'days since 2000-02-01'
time_num = 33.14159
actual = standardise_time_unit(time_num, old_unit, new_unit, '360_day')
expected = 3.14159
assert_almost_equal(actual, expected, decimal=5)
def test_none(self):
time_unit = 'days since 2000-01-01'
self.assertIsNone(
standardise_time_unit(None, time_unit, time_unit, '360_day'))