def standardise(self):
"""Format self.value into a standard representation."""
try:
self.value = str(interval_parse(self.value))
except IsodatetimeError:
raise IntervalParsingError(type(self), self.value)
return self
def __init__(self, value):
if (not isinstance(value, str) or
not REC_INTERVAL.search(value)):
raise IntervalParsingError("IntegerInterval", repr(value))
super(IntegerInterval, self).__init__(value)