fix

examples/python/proto_solve.py

@@ -0,0 +1,39 @@
+
+from absl import app
+from absl import flags
+from ortools.linear_solver.python import model_builder
+
+FLAGS = flags.FLAGS
+
+_INPUT = flags.DEFINE_string('input', '', 'Input file to load and solve.')
+_PARAMS = flags.DEFINE_string('params', '', 'Solver parameters in string format.')
+_SOLVER = flags.DEFINE_string('solver', 'sat', 'Solver type to solve the model with.')
+
+
+def main(_):
+    model = model_builder.ModelBuilder()
+
+    # Load MPS file.
+    if not model.import_from_mps_file(_INPUT.value):
+        print(f'Cannot import MPS file: \'{_INPUT.value}\'')
+        return
+
+    # Create solver.
+    solver = model_builder.ModelSolver(_SOLVER.value)
+    if not solver:
+        print(f'Cannot create solver with name \'{_SOLVER.value}\'')
+        return
+
+    # Set parameters.
+    if _PARAMS.value:
+        solver.set_solver_specific_parameters(_PARAMS.value)
+
+    # Enable the output of the solver.
+    solver.enable_output(True)
+
+    # And solve.
+    solver.solve(model)
+
+
+if __name__ == '__main__':
+    app.run(main)