sasoptpy.ConstraintGroup.get_expressions

ConstraintGroup.get_expressions(self, rhs=False)

Returns constraints as a list of expressions

Parameters

rhsboolean, optional

When set to True, passes the the constant part (rhs) of the constraint

Returns

dfpandas.DataFrame

Returns a DataFrame that consists of constraints as expressions

Examples

>>> m = so.Model(name='m')
>>> var_ind = ['a', 'b', 'c', 'd']
>>> u = m.add_variables(var_ind, name='u')
>>> t = m.add_variable(name='t')
>>> cg = so.ConstraintGroup((u[i] + 2 * t <= 5 for i in var_ind),
                            name='cg')
>>> ce = cg.get_expressions()
>>> print(ce)
             cg
a  u[a] + 2 * t
b  u[b] + 2 * t
c  u[c] + 2 * t
d  u[d] + 2 * t
>>> ce_rhs = cg.get_expressions(rhs=True)
>>> print(ce_rhs)
                 cg
a  u[a] + 2 * t - 5
b  u[b] + 2 * t - 5
c  u[c] + 2 * t - 5
d  u[d] + 2 * t - 5