我们从Python开源项目中，提取了以下17个代码示例，用于说明如何使用operator.isub()。
def _test_quantity_iadd_isub(self, unit, func): x = self.Q_(unit, 'centimeter') y = self.Q_(unit, 'inch') z = self.Q_(unit, 'second') a = self.Q_(unit, None) func(op.iadd, x, x, self.Q_(unit + unit, 'centimeter')) func(op.iadd, x, y, self.Q_(unit + 2.54 * unit, 'centimeter')) func(op.iadd, y, x, self.Q_(unit + unit / 2.54, 'inch')) func(op.iadd, a, unit, self.Q_(unit + unit, None)) self.assertRaises(DimensionalityError, op.iadd, 10, x) self.assertRaises(DimensionalityError, op.iadd, x, 10) self.assertRaises(DimensionalityError, op.iadd, x, z) func(op.isub, x, x, self.Q_(unit - unit, 'centimeter')) func(op.isub, x, y, self.Q_(unit - 2.54, 'centimeter')) func(op.isub, y, x, self.Q_(unit - unit / 2.54, 'inch')) func(op.isub, a, unit, self.Q_(unit - unit, None)) self.assertRaises(DimensionalityError, op.sub, 10, x) self.assertRaises(DimensionalityError, op.sub, x, 10) self.assertRaises(DimensionalityError, op.sub, x, z)
def test_inplace_subtraction(self, input_tuple, expected): self.ureg.autoconvert_offset_to_baseunit = False (q1v, q1u), (q2v, q2u) = input_tuple # update input tuple with new values to have correct values on failure input_tuple = ((np.array([q1v]*2, dtype=np.float), q1u), (np.array([q2v]*2, dtype=np.float), q2u)) Q_ = self.Q_ qin1, qin2 = input_tuple q1, q2 = Q_(*qin1), Q_(*qin2) q1_cp = copy.copy(q1) if expected == 'error': self.assertRaises(OffsetUnitCalculusError, op.isub, q1_cp, q2) else: expected = np.array([expected[0]]*2, dtype=np.float), expected[1] self.assertEqual(op.isub(q1_cp, q2).units, Q_(*expected).units) q1_cp = copy.copy(q1) self.assertQuantityAlmostEqual(op.isub(q1_cp, q2), Q_(*expected), atol=0.01)
def __isub__(self, other): ''' In-place subtract features from two FeatureCollections. >>> fc1 = FeatureCollection({'foo': Counter('abbb')}) >>> fc2 = FeatureCollection({'foo': Counter('bcc')}) >>> fc1 -= fc2 FeatureCollection({'foo': Counter({'b': 2, 'a': 1})}) Note that if a feature in either of the collections is not an instance of :class:`collections.Counter`, then it is ignored. ''' if self.read_only: raise ReadOnlyException() fc = self.merge_with(other, operator.isub) self._features = fc._features return self
def __isub__(self, other): if not isinstance(self._magnitude, ndarray): return self._add_sub(other, operator.sub) else: return self._iadd_sub(other, operator.isub)
def test_issue52(self): u1 = UnitRegistry() u2 = UnitRegistry() q1 = 1*u1.meter q2 = 1*u2.meter import operator as op for fun in (op.add, op.iadd, op.sub, op.isub, op.mul, op.imul, op.floordiv, op.ifloordiv, op.truediv, op.itruediv): self.assertRaises(ValueError, fun, q1, q2)
def test_isub_scalar(self): self.check_array_scalar_op(operator.isub, no_bool=True)
def test_isub_array(self): self.check_array_array_op(operator.isub, no_bool=True)
def test_broadcasted_isub(self): # TODO(unno): sub for boolean array is deprecated in numpy>=1.13 self.check_array_broadcasted_op(operator.isub, no_bool=True)
def test_isub_scalar(self): self.check_array_scalar_op(operator.isub)
def test_isub_array(self): self.check_array_array_op(operator.isub)
def test_broadcasted_isub(self): self.check_array_broadcasted_op(operator.isub)
def test_inplace(self): class C(object): def __iadd__ (self, other): return "iadd" def __iand__ (self, other): return "iand" def __ifloordiv__(self, other): return "ifloordiv" def __ilshift__ (self, other): return "ilshift" def __imod__ (self, other): return "imod" def __imul__ (self, other): return "imul" def __ior__ (self, other): return "ior" def __ipow__ (self, other): return "ipow" def __irshift__ (self, other): return "irshift" def __isub__ (self, other): return "isub" def __itruediv__ (self, other): return "itruediv" def __ixor__ (self, other): return "ixor" def __getitem__(self, other): return 5 # so that C is a sequence c = C() self.assertEqual(operator.iadd (c, 5), "iadd") self.assertEqual(operator.iand (c, 5), "iand") self.assertEqual(operator.ifloordiv(c, 5), "ifloordiv") self.assertEqual(operator.ilshift (c, 5), "ilshift") self.assertEqual(operator.imod (c, 5), "imod") self.assertEqual(operator.imul (c, 5), "imul") self.assertEqual(operator.ior (c, 5), "ior") self.assertEqual(operator.ipow (c, 5), "ipow") self.assertEqual(operator.irshift (c, 5), "irshift") self.assertEqual(operator.isub (c, 5), "isub") self.assertEqual(operator.itruediv (c, 5), "itruediv") self.assertEqual(operator.ixor (c, 5), "ixor") self.assertEqual(operator.iconcat (c, c), "iadd") self.assertEqual(operator.__iadd__ (c, 5), "iadd") self.assertEqual(operator.__iand__ (c, 5), "iand") self.assertEqual(operator.__ifloordiv__(c, 5), "ifloordiv") self.assertEqual(operator.__ilshift__ (c, 5), "ilshift") self.assertEqual(operator.__imod__ (c, 5), "imod") self.assertEqual(operator.__imul__ (c, 5), "imul") self.assertEqual(operator.__ior__ (c, 5), "ior") self.assertEqual(operator.__ipow__ (c, 5), "ipow") self.assertEqual(operator.__irshift__ (c, 5), "irshift") self.assertEqual(operator.__isub__ (c, 5), "isub") self.assertEqual(operator.__itruediv__ (c, 5), "itruediv") self.assertEqual(operator.__ixor__ (c, 5), "ixor") self.assertEqual(operator.__iconcat__ (c, c), "iadd")
def test_inplace(self): class C(object): def __iadd__ (self, other): return "iadd" def __iand__ (self, other): return "iand" def __idiv__ (self, other): return "idiv" def __ifloordiv__(self, other): return "ifloordiv" def __ilshift__ (self, other): return "ilshift" def __imod__ (self, other): return "imod" def __imul__ (self, other): return "imul" def __ior__ (self, other): return "ior" def __ipow__ (self, other): return "ipow" def __irshift__ (self, other): return "irshift" def __isub__ (self, other): return "isub" def __itruediv__ (self, other): return "itruediv" def __ixor__ (self, other): return "ixor" def __getitem__(self, other): return 5 # so that C is a sequence c = C() self.assertEqual(operator.iadd (c, 5), "iadd") self.assertEqual(operator.iand (c, 5), "iand") self.assertEqual(operator.idiv (c, 5), "idiv") self.assertEqual(operator.ifloordiv(c, 5), "ifloordiv") self.assertEqual(operator.ilshift (c, 5), "ilshift") self.assertEqual(operator.imod (c, 5), "imod") self.assertEqual(operator.imul (c, 5), "imul") self.assertEqual(operator.ior (c, 5), "ior") self.assertEqual(operator.ipow (c, 5), "ipow") self.assertEqual(operator.irshift (c, 5), "irshift") self.assertEqual(operator.isub (c, 5), "isub") self.assertEqual(operator.itruediv (c, 5), "itruediv") self.assertEqual(operator.ixor (c, 5), "ixor") self.assertEqual(operator.iconcat (c, c), "iadd") self.assertEqual(operator.irepeat (c, 5), "imul") self.assertEqual(operator.__iadd__ (c, 5), "iadd") self.assertEqual(operator.__iand__ (c, 5), "iand") self.assertEqual(operator.__idiv__ (c, 5), "idiv") self.assertEqual(operator.__ifloordiv__(c, 5), "ifloordiv") self.assertEqual(operator.__ilshift__ (c, 5), "ilshift") self.assertEqual(operator.__imod__ (c, 5), "imod") self.assertEqual(operator.__imul__ (c, 5), "imul") self.assertEqual(operator.__ior__ (c, 5), "ior") self.assertEqual(operator.__ipow__ (c, 5), "ipow") self.assertEqual(operator.__irshift__ (c, 5), "irshift") self.assertEqual(operator.__isub__ (c, 5), "isub") self.assertEqual(operator.__itruediv__ (c, 5), "itruediv") self.assertEqual(operator.__ixor__ (c, 5), "ixor") self.assertEqual(operator.__iconcat__ (c, c), "iadd") self.assertEqual(operator.__irepeat__ (c, 5), "imul")
