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September 13, 2024 10:58
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Group week numbers into [group_by_count]
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| from datetime import date | |
| def group_week_numbers(start_date, end_date, group_by_count): | |
| """Group week numbers into [group_by_count]""" | |
| initial_weeknum = start_date.isocalendar()[1] | |
| end_weeknum = end_date.isocalendar()[1] | |
| # end year should be from the isocalendar | |
| # example if you use date(2025, 12, 31) isocalendar will be | |
| # 2025 and week 1 | |
| end_year = end_date.isocalendar()[0] | |
| # weeks will be the return value | |
| # grouped will be the temporary holder of the grouped week | |
| weeks = [] | |
| grouped = [] | |
| for year in range(start_date.year, end_year + 1): | |
| # start week number begins with 1, but initial week number | |
| # should be from start date | |
| start_weeknum = 1 | |
| if year == start_date.year: | |
| start_weeknum = initial_weeknum | |
| # December 28 is always in the last week of the year. | |
| # If it is the last year get the weeknumber from the | |
| # end date. | |
| last_weeknum = date(year, 12, 28).isocalendar()[1] | |
| if year == end_year: | |
| last_weeknum = end_date.isocalendar()[1] | |
| for i in range(start_weeknum, last_weeknum + 1): | |
| if len(grouped) < group_by_count: | |
| grouped.append((i, year)) | |
| else: | |
| weeks.append(grouped) | |
| grouped = [] | |
| grouped.append((i, year)) | |
| # If grouped still contains any weeks add them to the list | |
| if len(grouped): | |
| weeks.append(grouped) | |
| return weeks |
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