60 lines
1.5 KiB
Python
60 lines
1.5 KiB
Python
from decimal import Decimal as D
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class Deg:
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def __str__(self):
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return "%03d-%02d-%3.1f" % (self.deg, self.mm, self.ss)
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def __init__(self, deg, mm, ss):
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self.deg = D(deg)
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self.mm = D(mm)
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self.ss = D(ss)
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@classmethod
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def from_1(cls, deg):
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assert isinstance(deg, D)
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pdeg, pmm = divmod(deg, 1)
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pmm = pmm * D(60)
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pmm, pss = divmod(pmm, 1)
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pss = pss * D(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(D(instr))
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@property
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def frac(self):
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return (
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self.deg +
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self.mm / D(60) +
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self.ss / D(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('125.505')
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self.assertEqual(125, w.deg)
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self.assertEqual(30, w.mm)
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self.assertEqual(18, w.ss)
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def test_guess(self):
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w = Deg.guess('112-58-25.4')
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self.assertEqual(112, w.deg)
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self.assertEqual(58, w.mm)
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self.assertEqual(D('25.4'), w.ss)
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frac = "%3.7f" % w.frac
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self.assertEqual('112.9737222', frac)
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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("120-01-42.5", 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("120-01-42.5", str(w))
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