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| from datetime import timedelta | |
| def week_range(date): | |
| """Find the first & last day of the week for the given day. | |
| Assuming weeks start on Sunday and end on Saturday. | |
| Returns a tuple of ``(start_date, end_date)``. | |
| """ | |
| # isocalendar calculates the year, week of the year, and day of the week. | |
| # dow is Mon = 1, Sat = 6, Sun = 7 | |
| year, week, dow = date.isocalendar() | |
| # Find the first day of the week. | |
| if dow == 7: | |
| # Since we want to start with Sunday, let's test for that condition. | |
| start_date = date | |
| else: | |
| # Otherwise, subtract `dow` number days to get the first day | |
| start_date = date - timedelta(dow) | |
| # Now, add 6 for the last day of the week (i.e., count up to Saturday) | |
| end_date = start_date + timedelta(6) | |
| return (start_date, end_date) |
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