Allow to use relative dates in the format (now|today)[+-][0-9](day|week|month|year)(s)? (Closes #137)
Also fix DateRange not accepting ranges of one day.
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a11ea50319
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2 changed files with 28 additions and 5 deletions
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@ -586,7 +586,29 @@ def unified_strdate(date_str):
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return upload_date
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return upload_date
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def date_from_str(date_str):
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def date_from_str(date_str):
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"""Return a datetime object from a string in the format YYYYMMDD"""
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"""
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Return a datetime object from a string in the format YYYYMMDD or
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(now|today)[+-][0-9](day|week|month|year)(s)?"""
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today = datetime.date.today()
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if date_str == 'now'or date_str == 'today':
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return today
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match = re.match('(now|today)(?P<sign>[+-])(?P<time>\d+)(?P<unit>day|week|month|year)(s)?', date_str)
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if match is not None:
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sign = match.group('sign')
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time = int(match.group('time'))
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if sign == '-':
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time = -time
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unit = match.group('unit')
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#A bad aproximation?
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if unit == 'month':
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unit = 'day'
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time *= 30
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elif unit == 'year':
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unit = 'day'
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time *= 365
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unit += 's'
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delta = datetime.timedelta(**{unit: time})
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return today + delta
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return datetime.datetime.strptime(date_str, "%Y%m%d").date()
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return datetime.datetime.strptime(date_str, "%Y%m%d").date()
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class DateRange(object):
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class DateRange(object):
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@ -601,7 +623,7 @@ class DateRange(object):
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self.end = date_from_str(end)
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self.end = date_from_str(end)
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else:
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else:
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self.end = datetime.datetime.max.date()
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self.end = datetime.datetime.max.date()
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if self.start >= self.end:
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if self.start > self.end:
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raise ValueError('Date range: "%s" , the start date must be before the end date' % self)
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raise ValueError('Date range: "%s" , the start date must be before the end date' % self)
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@classmethod
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@classmethod
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def day(cls, day):
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def day(cls, day):
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@ -609,7 +631,8 @@ class DateRange(object):
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return cls(day,day)
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return cls(day,day)
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def __contains__(self, date):
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def __contains__(self, date):
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"""Check if the date is in the range"""
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"""Check if the date is in the range"""
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date = date_from_str(date)
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if not isinstance(date, datetime.date):
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return self.start <= date and date <= self.end
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date = date_from_str(date)
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return self.start <= date <= self.end
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def __str__(self):
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def __str__(self):
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return '%s - %s' % ( self.start.isoformat(), self.end.isoformat())
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return '%s - %s' % ( self.start.isoformat(), self.end.isoformat())
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