QuadraticProgram.continuous_var_list¶

QuadraticProgram.continuous_var_list(keys, lowerbound=0, upperbound=1e+20, name=None, key_format='{}')[source]¶

Uses ‘var_list’ to construct a list of continuous variables

Parameters:

lowerbound (Union[float, int]) – The lower bound of the variable(s).
upperbound (Union[float, int]) – The upper bound of the variable(s).
name (Optional[str]) – The name(s) of the variable(s). If it’s None or empty "", the default name, e.g., x0, is used.
key_format (str) – The format used to name/index the variable(s).
keys (Union[int, Sequence]) – If keys: int, it is interpreted as the number of variables to construct. Otherwise, the elements of the sequence are converted to strings via ‘str’ and substituted into key_format.

Return type:

List[Variable]

Returns:

A list of variable instances.

Raises:

QiskitOptimizationError – if the variable name is already taken.
QiskitOptimizationError – if less than one variable instantiation is attempted.
QiskitOptimizationError – if key_format has more than one substitution or a nested substitution.