sasoptpy.Model.add_variable¶

Model.add_variable(self, name, vartype=None, lb=None, ub=None, init=None)[source]¶

Adds a new variable to the model

New variables can be created via this method or existing variables can be added to the model.

Parameters

namestring: Name of the variable to be created
vartypestring, optional: Type of the variable, either sasoptpy.BIN, sasoptpy.INT or sasoptpy.CONT
lbfloat, optional: Lower bound of the variable
ubfloat, optional: Upper bound of the variable
initfloat, optional: Initial value of the variable

Returns

varVariable: Variable that is added to the model

See also

Variable, Model.include()

Notes

name is a mandatory field for this method.

Examples

Adding a variable on the fly

>>> m = so.Model(name='demo')
>>> x = m.add_variable(name='x', vartype=so.INT, ub=10, init=2)
>>> print(repr(x))
NOTE: Initialized model demo
sasoptpy.Variable(name='x', lb=0, ub=10, init=2, vartype='INT')

Adding an existing variable to a model

>>> y = so.Variable(name='y', vartype=so.BIN)
>>> m = so.Model(name='demo')
>>> m.include(y)