Created
April 7, 2017 13:56
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psycopg2 DateRange functions to determine overlapping range and number of days
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def daterange_overlap(range1, range2): | |
"""returns the overlapping DateRange of 2 DateRanges, DateRange(None, None) if no overlap""" | |
lower = max([range1.lower or datetime.date.min, range2.lower or datetime.date.min]) | |
upper = min([range1.upper or datetime.date.max, range2.upper or datetime.date.max]) | |
return DateRange(None if lower == datetime.date.min else lower, None if upper == datetime.date.max else upper) | |
def daterange_days(date_range): | |
return (date_range.upper - date_range.lower).days |
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