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Python Constant.name方法代码示例

本文整理汇总了Python中cvxpy.expressions.constants.Constant.name方法的典型用法代码示例。如果您正苦于以下问题：Python Constant.name方法的具体用法？Python Constant.name怎么用？Python Constant.name使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类cvxpy.expressions.constants.Constant的用法示例。


在下文中一共展示了Constant.name方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: test_constants

# 需要导入模块: from cvxpy.expressions.constants import Constant [as 别名]
# 或者: from cvxpy.expressions.constants.Constant import name [as 别名]
    def test_constants(self):
        c = Constant(2)
        self.assertEqual(c.name(), str(2))

        c = Constant(2, name="c")
        self.assertEqual(c.name(), "c")
        self.assertEqual(c.value, 2)
        self.assertEqual(c.size, (1,1))
        self.assertEqual(c.curvature, u.Curvature.CONSTANT)
        self.assertEqual(c.sign, u.Sign.POSITIVE)
        self.assertEqual(Constant(-2).sign, u.Sign.NEGATIVE)
        self.assertEqual(Constant(0).sign, u.Sign.ZERO)
        self.assertEqual(c.canonicalize()[0].size, (1,1))
        self.assertEqual(c.canonicalize()[1], [])
        
        coeffs = c.coefficients(self.intf)
        self.assertEqual(coeffs.keys(), [Constant])
        self.assertEqual(coeffs[Constant], 2)

        # Test the sign.
        c = Constant([[2],[2]])
        self.assertEqual(c.size, (1,2))
        self.assertEqual(c.sign.neg_mat.value.shape, (1,2))

        # Test sign of a complex expression.
        c = Constant([1, 2])
        A = Constant([[1,1],[1,1]])
        exp = c.T*A*c
        self.assertEqual(exp.sign, u.Sign.POSITIVE)
        self.assertEqual((c.T*c).sign, u.Sign.POSITIVE)
        exp = c.T.T
        self.assertEqual(exp.sign.pos_mat.value.ndim, 2)
        exp = c.T*self.A
        self.assertEqual(exp.sign.pos_mat.value.ndim, 2)
开发者ID:Russell91，项目名称:cvxpy，代码行数:36，代码来源:test_expressions.py

示例2: test_add_expression

# 需要导入模块: from cvxpy.expressions.constants import Constant [as 别名]
# 或者: from cvxpy.expressions.constants.Constant import name [as 别名]
    def test_add_expression(self):
        # Vectors
        c = Constant([2,2])
        exp = self.x + c
        self.assertEqual(exp.curvature, u.Curvature.AFFINE)
        self.assertEqual(exp.sign, u.Sign.UNKNOWN)
        self.assertEqual(exp.canonicalize()[0].size, (2,1))
        self.assertEqual(exp.canonicalize()[1], [])
        self.assertEqual(exp.name(), self.x.name() + " + " + c.name())
        self.assertEqual(exp.size, (2,1))

        z = Variable(2, name='z')
        exp = exp + z + self.x

        with self.assertRaises(Exception) as cm:
            (self.x + self.y)
        self.assertEqual(str(cm.exception), "Incompatible dimensions.")

        # Matrices
        exp = self.A + self.B
        self.assertEqual(exp.curvature, u.Curvature.AFFINE)
        self.assertEqual(exp.size, (2,2))

        with self.assertRaises(Exception) as cm:
            (self.A + self.C)
        self.assertEqual(str(cm.exception), "Incompatible dimensions.")
开发者ID:HapeMask，项目名称:cvxpy，代码行数:28，代码来源:test_expressions.py

示例3: test_constants

# 需要导入模块: from cvxpy.expressions.constants import Constant [as 别名]
# 或者: from cvxpy.expressions.constants.Constant import name [as 别名]
    def test_constants(self):
        c = Constant(2)
        self.assertEqual(c.name(), str(2))

        c = Constant(2)
        self.assertEqual(c.value, 2)
        self.assertEqual(c.size, (1,1))
        self.assertEqual(c.curvature, u.Curvature.CONSTANT_KEY)
        self.assertEqual(c.sign, u.Sign.POSITIVE_KEY)
        self.assertEqual(Constant(-2).sign, u.Sign.NEGATIVE_KEY)
        self.assertEqual(Constant(0).sign, u.Sign.ZERO_KEY)
        self.assertEqual(c.canonical_form[0].size, (1,1))
        self.assertEqual(c.canonical_form[1], [])

        coeffs = c.coefficients()
        self.assertEqual(coeffs.keys(), [s.CONSTANT])
        self.assertEqual(coeffs[s.CONSTANT], [2])

        # Test the sign.
        c = Constant([[2],[2]])
        self.assertEqual(c.size, (1,2))
        self.assertEqual(c._dcp_attr.sign.neg_mat.shape, (1,2))

        # Test sign of a complex expression.
        c = Constant([1, 2])
        A = Constant([[1,1],[1,1]])
        exp = c.T*A*c
        self.assertEqual(exp.sign, u.Sign.POSITIVE_KEY)
        self.assertEqual((c.T*c).sign, u.Sign.POSITIVE_KEY)
        exp = c.T.T
        self.assertEqual(exp._dcp_attr.sign.pos_mat.shape, (2,1))
        exp = c.T*self.A
        self.assertEqual(exp._dcp_attr.sign.pos_mat.shape, (1,2))
开发者ID:evelynmitchell，项目名称:cvxpy，代码行数:35，代码来源:test_expressions.py

示例4: test_constants

# 需要导入模块: from cvxpy.expressions.constants import Constant [as 别名]
# 或者: from cvxpy.expressions.constants.Constant import name [as 别名]
    def test_constants(self):
        c = Constant(2)
        self.assertEqual(c.name(), str(2))

        c = Constant(2, name="c")
        self.assertEqual(c.name(), "c")
        self.assertEqual(c.value, 2)
        self.assertEqual(c.size, (1,1))
        self.assertEqual(c.curvature, u.Curvature.CONSTANT)
        self.assertEqual(c.sign, u.Sign.POSITIVE)
        self.assertEqual(Constant(-2).sign, u.Sign.NEGATIVE)
        self.assertEqual(Constant(0).sign, u.Sign.ZERO)
        self.assertEqual(c.canonicalize()[0].size, (1,1))
        self.assertEqual(c.canonicalize()[1], [])
        
        coeffs = c.coefficients(self.intf)
        self.assertEqual(coeffs.keys(), [s.CONSTANT])
        self.assertEqual(coeffs[s.CONSTANT], 2)

        # Test the sign.
        c = Constant([[2],[2]])
        self.assertEqual(c.size, (1,2))
        self.assertEqual(c.sign.neg_mat.value.shape, (1,2))
开发者ID:HapeMask，项目名称:cvxpy，代码行数:25，代码来源:test_expressions.py

示例5: test_constants

# 需要导入模块: from cvxpy.expressions.constants import Constant [as 别名]
# 或者: from cvxpy.expressions.constants.Constant import name [as 别名]
    def test_constants(self):
        c = Constant(2)
        self.assertEqual(c.name(), str(2))

        c = Constant(2)
        self.assertEqual(c.value, 2)
        self.assertEqual(c.size, (1,1))
        self.assertEqual(c.curvature, u.Curvature.CONSTANT_KEY)
        self.assertEqual(c.sign, u.Sign.POSITIVE_KEY)
        self.assertEqual(Constant(-2).sign, u.Sign.NEGATIVE_KEY)
        self.assertEqual(Constant(0).sign, u.Sign.ZERO_KEY)
        self.assertEqual(c.canonical_form[0].size, (1,1))
        self.assertEqual(c.canonical_form[1], [])

        # coeffs = c.coefficients()
        # self.assertEqual(coeffs.keys(), [s.CONSTANT])
        # self.assertEqual(coeffs[s.CONSTANT], [2])

        # Test the sign.
        c = Constant([[2], [2]])
        self.assertEqual(c.size, (1, 2))
        self.assertEqual(c.sign, u.Sign.POSITIVE_KEY)
        self.assertEqual((-c).sign, u.Sign.NEGATIVE_KEY)
        self.assertEqual((0*c).sign, u.Sign.ZERO_KEY)
        c = Constant([[2], [-2]])
        self.assertEqual(c.sign, u.Sign.UNKNOWN_KEY)

        # Test sign of a complex expression.
        c = Constant([1, 2])
        A = Constant([[1,1],[1,1]])
        exp = c.T*A*c
        self.assertEqual(exp.sign, u.Sign.POSITIVE_KEY)
        self.assertEqual((c.T*c).sign, u.Sign.POSITIVE_KEY)
        exp = c.T.T
        self.assertEqual(exp.sign, u.Sign.POSITIVE_KEY)
        exp = c.T*self.A
        self.assertEqual(exp.sign, u.Sign.UNKNOWN_KEY)

        # Test repr.
        self.assertEqual(repr(c), "Constant(CONSTANT, POSITIVE, (2, 1))")
开发者ID:Jakobularius，项目名称:cvxpy，代码行数:42，代码来源:test_expressions.py

示例6: test_mul_expression

# 需要导入模块: from cvxpy.expressions.constants import Constant [as 别名]
# 或者: from cvxpy.expressions.constants.Constant import name [as 别名]
    def test_mul_expression(self):
        # Vectors
        c = Constant([[2],[2]])
        exp = c*self.x
        self.assertEqual(exp.curvature, u.Curvature.AFFINE)
        self.assertEqual((c[0]*self.x).sign, u.Sign.UNKNOWN)
        self.assertEqual(exp.canonicalize()[0].size, (1,1))
        self.assertEqual(exp.canonicalize()[1], [])
        self.assertEqual(exp.name(), c.name() + " * " + self.x.name())
        self.assertEqual(exp.size, (1,1))

        with self.assertRaises(Exception) as cm:
            ([2,2,3]*self.x)
        const_name = Constant([2,2,3]).name()
        self.assertEqual(str(cm.exception), 
            "Incompatible dimensions.")

        # Matrices
        with self.assertRaises(Exception) as cm:
            Constant([[2, 1],[2, 2]]) * self.C
        self.assertEqual(str(cm.exception), "Incompatible dimensions.")

        with self.assertRaises(Exception) as cm:
            (self.A * self.B)
        self.assertEqual(str(cm.exception), "Cannot multiply two non-constants.")

        # Constant expressions
        T = Constant([[1,2,3],[3,5,5]])
        exp = (T + T) * self.B
        self.assertEqual(exp.curvature, u.Curvature.AFFINE)
        self.assertEqual(exp.size, (3,2))

        # Expression that would break sign multiplication without promotion.
        c = Constant([[2],[2],[-2]])
        exp = [[1],[2]] + c*self.C
        self.assertEqual(exp.sign.pos_mat.value.shape, (1,2))
开发者ID:HapeMask，项目名称:cvxpy，代码行数:38，代码来源:test_expressions.py


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