def setUp(self):
self.t2 = TableauBuilder()
self.tableau = self.t2.add_constraint(GreaterEqualThan([2, 5], 30)).\
add_constraint(GreaterEqualThan([-3, 5], 5)).\
add_constraint(LessEqualThan([8, 3], 85)).\
add_constraint(LessEqualThan([-9, 7], 42)).\
set_objective([2, 7]).get()
def transform(cs: ConstraintSet, obj: Objective):
tb = TableauBuilder()
for c in cs.constraints:
tb.add_constraint(c)
tb.set_objective(obj._coeffs)
return tb.get()
def setUp(self):
self.t3 = TableauBuilder()
self.t3.add_constraint(LessEqualThan([2, 1], 18))
self.t3.add_constraint(LessEqualThan([2, 3], 42))
self.t3.add_constraint(LessEqualThan([3, 1], 24))
self.t3.set_objective([3, 2])
self.var_names = ['x_1', 'x_2', '_s_1', '_s_2', '_s_3']
def test_str_2(self):
builder = TableauBuilder()
self.tableau = builder.add_constraint(GreaterEqualThan([2, 5], 30))\
.set_objective([5, 10])\
.get()
self.assertEqual(str(self.tableau), "[x_1, x_2, _s_1, _a_1]\n"
"[2.0, 5.0, -1.0, 1.0, 30.0]\n"
"[-5.0, -10.0, 0.0, 1000.0, 0.0]")
def builder_from_file(filepath):
obj, constraints = read(filepath)
builder = TableauBuilder()
for left_side, ctype, right_side in constraints:
if ctype == "<=":
builder.add_constraint(LessEqualThan(left_side, right_side))
elif ctype == ">=":
builder.add_constraint(GreaterEqualThan(left_side, right_side))
else:
raise NotImplementedError
builder.set_objective(obj)
return builder
def setUp(self):
self.t3 = TableauBuilder()
self.t3.add_constraint(LessEqualThan([2, 1], 18)).\
add_constraint(LessEqualThan([2, 3], 42)). \
add_constraint(LessEqualThan([3, 1], 24)).\
set_objective([3, 2])
def setUp(self):
tb = TableauBuilder()
self.tableau = tb.add_constraint(GreaterEqualThan([2, -1], 10))\
.add_constraint(LessEqualThan([1, 1], 20))\
.set_objective([5, 10]).get()