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This commit is contained in:
Laurent Perron
2023-10-24 13:33:46 +02:00
parent d86dfadc86
commit 9939e9d074
4 changed files with 14 additions and 14 deletions
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2
ortools/linear_solver/samples/BUILD.bazel
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@@ -44,7 +44,7 @@ code_sample_py(name = "assignment_mb")
code_sample_py(name = "bin_packing_mb")
code_sample_py(name = "copy_model_mb")
code_sample_py(name = "clone_model_mb")
code_sample_py(name = "simple_lp_program_mb")

20
ortools/linear_solver/samples/copy_model_mb.py → ortools/linear_solver/samples/clone_model_mb.py
View File

@@ -13,7 +13,7 @@
# limitations under the License.
# [START program]
"""Integer programming examples that show how to use the APIs."""
"""Integer programming examples that show how to clone a model."""
# [START import]
import math
@@ -35,7 +35,7 @@ def main():
# [START constraints]
# x + 7 * y <= 17.5.
c1 = model.add(x + 7 * y <= 17.5)
unused_c1 = model.add(x + 7 * y <= 17.5)
# x <= 3.5.
c2 = model.add(x <= 3.5)
@@ -56,14 +56,12 @@ def main():
# Add new constraint.
model_copy.add(x_copy >= 1)
print("Number of constraints in original model =", model.num_constraints)
print("Number of constraints in cloned model =", model_copy.num_constraints)
print(f"Number of constraints in original model ={model.num_constraints}")
print(f"Number of constraints in cloned model = {model_copy.num_constraints}")
# Modify a constraint.
c2_copy.add_term(z_copy, 2.0)
print(model_copy.export_to_lp_string())
# [START solve]
# Create the solver with the SCIP backend, and solve the model.
solver = model_builder.ModelSolver("scip")
@@ -73,17 +71,17 @@ def main():
# [START print_solution]
if status == model_builder.SolveStatus.OPTIMAL:
print("Solution:")
print("Objective value =", solver.objective_value)
print("x =", solver.value(x_copy))
print("y =", solver.value(y_copy))
print("z =", solver.value(z_copy))
print(f"Objective value = {solver.objective_value}")
print(f"x = {solver.value(x_copy)}")
print(f"y = {solver.value(y_copy)}")
print(f"z = {solver.value(z_copy)}")
else:
print("The problem does not have an optimal solution.")
# [END print_solution]
# [START advanced]
print("\nAdvanced usage:")
print("Problem solved in %f seconds" % solver.wall_time)
print(f"Problem solved in {solver.wall_time} seconds")
# [END advanced]