51 lines
1.3 KiB
Python
51 lines
1.3 KiB
Python
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from decimal import Decimal
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class Deg:
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def __str__(self):
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return "%03d-%02d-%04.2f" % (self.deg, self.mm, self.ss)
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def __init__(self, deg, mm, ss):
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self.deg = Decimal(deg)
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self.mm = Decimal(mm)
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self.ss = Decimal(ss)
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@classmethod
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def from_1(cls, deg):
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assert isinstance(deg, Decimal)
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pdeg, pmm = divmod(deg, 1)
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pmm = pmm * Decimal(60)
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pmm, pss = divmod(pmm, 1)
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pss = pss * Decimal(60)
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return cls(pdeg, pmm, pss)
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@classmethod
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def guess(cls, instr):
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if '-' in instr:
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deg, mm, ss = instr.split('-')
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return Deg(deg, mm, ss)
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return cls.from_1(Decimal(instr))
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def frac(self):
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return (
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self.deg +
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self.mm / Decimal(60) +
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self.ss / Decimal(3600)).normalize()
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import unittest
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class TestDeg(unittest.TestCase):
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def test_deg(self):
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w = Deg.guess('125.5')
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self.assertEqual(125, w.deg)
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self.assertEqual(30, w.mm)
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self.assertEqual(0, w.ss)
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def test_str_lower(self):
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w = Deg(120, 1, 42.541)
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self.assertEqual("120-01-42.54", str(w))
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def test_str_upper(self):
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w = Deg(120, 1, 42.545)
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self.assertEqual("120-01-42.55", str(w))
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