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synthetic_roman_subtractive
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Posted 2026-07-22 05:30 EDT. Today's card is open. Submit any time before the next card replaces it.
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synthetic_roman_subtractive
Handle subtractive Roman numerals
The issue
roman_to_int should handle subtractive pairs such as IV, IX, and XL.
Show The code · src/tg_roman_subtractive/core.py
VALUES = {"I":1,"V":5,"X":10,"L":50,"C":100,"D":500,"M":1000}
def roman_to_int(text):
total = 0
for ch in text: total += VALUES[ch]
return total
Show Visible tests · tests/test_public.py
import unittest
from tg_roman_subtractive.core import roman_to_int
class PublicTests(unittest.TestCase):
def test_additive(self): self.assertEqual(roman_to_int("VIII"), 8)
Extra validation checks cover requirements your visible checks don't — read the issue carefully.
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