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bpo-41720: Add "return NotImplemented" in turtle.Vec2D.__rmul__(). (GH-22092)

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(cherry picked from commit fd4cafd470)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
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Miss Islington (bot) 2020-09-07 09:30:21 -07:00 • committed by GitHub
parent c73ee5acc9
commit 1671b0e4e0
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3 changed files with 19 additions and 2 deletions
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18
Lib/test/test_turtle.py
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@ -127,6 +127,14 @@ class VectorComparisonMixin:
self.assertAlmostEqual(
i, j, msg='values at index {} do not match'.format(idx))
class Multiplier:
def __mul__(self, other):
return f'M*{other}'
def __rmul__(self, other):
return f'{other}*M'
class TestVec2D(VectorComparisonMixin, unittest.TestCase):
@ -208,9 +216,15 @@ class TestVec2D(VectorComparisonMixin, unittest.TestCase):
self.assertAlmostEqual(answer, expected)
vec = Vec2D(0.5, 3)
answer = vec * 10
expected = Vec2D(5, 30)
self.assertVectorsAlmostEqual(answer, expected)
self.assertVectorsAlmostEqual(vec * 10, expected)
self.assertVectorsAlmostEqual(10 * vec, expected)
self.assertVectorsAlmostEqual(vec * 10.0, expected)
self.assertVectorsAlmostEqual(10.0 * vec, expected)
M = Multiplier()
self.assertEqual(vec * M, Vec2D(f"{vec[0]}*M", f"{vec[1]}*M"))
self.assertEqual(M * vec, f'M*{vec}')
def test_vector_negative(self):
vec = Vec2D(10, -10)