# Check if the LP is valid.
valid, msg = check_valid_lp(var_signs, A, directions, bvals, max_or_min,
cvals, verbose)
if not valid:
err_msg = msg if verbose else 'Invalid LP. Exiting.'
exit_with_message(err_msg)
# TODO(optional): Check if constraints are linearly indepdent. Should be pretty easy with NumPy.
if command == 'dual':
d_var_signs, d_A, d_directions, d_bvals, d_max_or_min, d_cvals = convert_to_dual(
var_signs, A, directions, bvals, max_or_min, cvals)
writer = FileWriter()
# Prints model to stdout.
writer.write_model_to_file(d_var_signs, d_A, d_directions, d_bvals,
d_max_or_min, d_cvals)
elif command == 'solve':
model = StandardFormLP(var_signs, A, directions, bvals, max_or_min,
cvals)
if model.are_dependent_constraints():
print('Dependent constraints. Exiting.')
exit()
solver = TwoPhaseSimplex(verbose=verbose)
solution, obj, x = solver.solve(model)
if solution == 'Infeasible':
print('Infeasible problem. Exiting.')
elif solution == 'Unbounded':
print('Unbounded problem. Exiting.')
elif solution == 'Solved':
print(convert_to_signed_string(model.convert_objective(obj)))
print('\t'.join(
