return today + delta
return datetime.datetime.strptime(date_str, "%Y%m%d").date()
+def hyphenate_date(date_str):
+ """
+ Convert a date in 'YYYYMMDD' format to 'YYYY-MM-DD' format"""
+ match = re.match(r'^(\d\d\d\d)(\d\d)(\d\d)$', date_str)
+ if match is not None:
+ return '-'.join(match.groups())
+ else:
+ return date_str
+
class DateRange(object):
"""Represents a time interval between two dates"""
def __init__(self, start=None, end=None):