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31 lines
1.1 KiB
Python
31 lines
1.1 KiB
Python
import datetime
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from datetime import date
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from django.utils.timezone import make_aware
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import calendar
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# credits: https://stackoverflow.com/a/4131114
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# Made them aware of timezone
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def add_months(d, months):
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month = d.month - 1 + months
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year = d.year + month // 12
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month = month % 12 + 1
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day = min(d.day, calendar.monthrange(year,month)[1])
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return d.replace(year=year, month=month, day=day)
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# credits: https://stackoverflow.com/a/15743908
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# Changed the last line to make it a little easier to read and changed it to move February 29 to 28 next year
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# Also made them aware of timezone
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def add_years(d, years):
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"""Return a date that's `years` years after the date (or datetime)
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object `d`. Return the same calendar date (month and day) in the
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destination year, if it exists, otherwise use the previous day
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(thus changing February 29 to February 28).
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"""
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try:
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return d.replace(year = d.year + years)
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except ValueError:
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new_date = d + (date(d.year + years, 3, 1) - date(d.year, 3, 1))
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return d.replace(year=new_date.year, month=new_date.month, day=new_date.day)
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