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from datetime import date |
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class DatePeriod: |
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# A class from defining a data range to then do date comparisons |
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def __init__(self, year: int | None, month: int = None, day: int = None): |
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self.year = year |
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if year is None and month is not None: |
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raise ValueError("Month can't have value if Year doesn't") |
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self.month = month |
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if month is None and day is not None: |
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raise ValueError("Day can't have value if Month doesn't") |
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self.day = day |
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def __eq__(self, other): |
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if isinstance(other, date): |
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for s, o in ((self.year, other.year), (self.month, other.month), (self.day, other.day)): |
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if s is not None and s != o: |
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return False |
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return True |
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return NotImplemented |
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def __ne__(self, other): |
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if isinstance(other, date): |
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return not self.__eq__(other) |
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return NotImplemented |
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def __gt__(self, other): |
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if isinstance(other, date): |
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for s, o in ((self.year, other.year), (self.month, other.month), (self.day, other.day)): |
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if s is not None and s != o: |
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return s > o |
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return False |
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return NotImplemented |
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def __ge__(self, other): |
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if isinstance(other, date): |
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return self > other or self == other |
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return NotImplemented |
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def __lt__(self, other): |
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if isinstance(other, date): |
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for s, o in ((self.year, other.year), (self.month, other.month), (self.day, other.day)): |
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if s is not None and s != o: |
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return s < o |
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return False |
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return NotImplemented |
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def __le__(self, other): |
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if isinstance(other, date): |
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return self < other or self == other |
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return NotImplemented |
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def __str__(self): |
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res = "" |
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for n, f in ((self.year, "{:04d}"), (self.month, "-{:02d}"), (self.day, "-{:02d}")): |
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if n: |
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res += f.format(n) |
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return res |
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