| import asyncio |
| import decimal |
| import unittest |
| |
| |
| class DecimalContextTest(unittest.TestCase): |
| |
| def test_asyncio_task_decimal_context(self): |
| async def fractions(t, precision, x, y): |
| with decimal.localcontext() as ctx: |
| ctx.prec = precision |
| a = decimal.Decimal(x) / decimal.Decimal(y) |
| await asyncio.sleep(t) |
| b = decimal.Decimal(x) / decimal.Decimal(y ** 2) |
| return a, b |
| |
| async def main(): |
| r1, r2 = await asyncio.gather( |
| fractions(0.1, 3, 1, 3), fractions(0.2, 6, 1, 3)) |
| |
| return r1, r2 |
| |
| r1, r2 = asyncio.run(main()) |
| |
| self.assertEqual(str(r1[0]), '0.333') |
| self.assertEqual(str(r1[1]), '0.111') |
| |
| self.assertEqual(str(r2[0]), '0.333333') |
| self.assertEqual(str(r2[1]), '0.111111') |