def __init__(self, **values):
self.start_date = values.pop("start_date", None)
if self.start_date:
self.start_date = convert_to_datetime(self.start_date)
# Yank out all None valued fields
for key, value in list(iteritems(values)):
if value is None:
del values[key]
self.fields = []
assign_defaults = False
for field_name in self.FIELD_NAMES:
if field_name in values:
exprs = values.pop(field_name)
is_default = False
assign_defaults = not values
elif assign_defaults:
exprs = DEFAULT_VALUES[field_name]
is_default = True
else:
exprs = "*"
is_default = True
field_class = self.FIELDS_MAP[field_name]
field = field_class(field_name, exprs, is_default)
self.fields.append(field)
def __init__(self, interval, start_date=None):
if not isinstance(interval, timedelta):
raise TypeError('interval must be a timedelta')
if start_date:
start_date = convert_to_datetime(start_date)
self.interval = interval
self.interval_length = timedelta_seconds(self.interval)
if self.interval_length == 0:
self.interval = timedelta(seconds=1)
self.interval_length = 1
if start_date is None:
self.start_date = datetime.now() + self.interval
else:
self.start_date = convert_to_datetime(start_date)
def __init__(self, run_date):
self.run_date = convert_to_datetime(run_date)