Variable
class Variable(quadratic_program, name, lowerbound=0, upperbound=1e+20, vartype=VarType.CONTINUOUS)
Representation of a variable.
Creates a new Variable.
The variables is exposed by the top-level QuadraticProgram class in QuadraticProgram.variables. This constructor is not meant to be used externally.
Parameters
- quadratic_program (
Any) – The parent QuadraticProgram. - name (
str) – The variable name. - lowerbound (
Union[float,int]) – The variable lowerbound. - upperbound (
Union[float,int]) – The variable upperbound. - vartype (
VarType) – The variable type.
Raises
QiskitOptimizationError – if lowerbound is greater than upperbound.
Attributes
lowerbound
Type: Union[float, int]
Returns the lowerbound of the variable.
Return type
Union[float, int]
Returns
The lower bound of the variable.
name
Type: str
Returns the name of the variable.
Return type
str
Returns
The name of the variable.
quadratic_program
Type: Any
Returns the parent QuadraticProgram.
Return type
Any
Returns
The parent QuadraticProgram.
upperbound
Type: Union[float, int]
Returns the upperbound of the variable.
Return type
Union[float, int]
Returns
The upperbound of the variable.
vartype
Type: qiskit.optimization.problems.variable.VarType
Returns the type of the variable.
Return type
VarType
Returns
The variable type.
Methods
as_tuple
Variable.as_tuple()
Returns a tuple corresponding to this variable.
Return type
Tuple[str, Union[float, int], Union[float, int], VarType]
Returns
A tuple corresponding to this variable consisting of name, lowerbound, upperbound and variable type.