old_contents: # Copyright 2010-2018 Google LLC
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  """A simple knapsack problem."""
  # [START program]
  # [START import]
  from __future__ import print_function
  from ortools.algorithms import pywrapknapsack_solver
  
  # [END import]
  
  
  def main():
      # Create the solver.
      # [START solver]
      solver = pywrapknapsack_solver.KnapsackSolver(
          pywrapknapsack_solver.KnapsackSolver.
          KNAPSACK_MULTIDIMENSION_BRANCH_AND_BOUND_SOLVER, 'KnapsackExample')
      # [END solver]
  
      # [START data]
      values = [
          360, 83, 59, 130, 431, 67, 230, 52, 93, 125, 670, 892, 600, 38, 48, 147,
          78, 256, 63, 17, 120, 164, 432, 35, 92, 110, 22, 42, 50, 323, 514, 28,
          87, 73, 78, 15, 26, 78, 210, 36, 85, 189, 274, 43, 33, 10, 19, 389, 276,
          312
      ]
      weights = [[
          7, 0, 30, 22, 80, 94, 11, 81, 70, 64, 59, 18, 0, 36, 3, 8, 15, 42, 9, 0,
          42, 47, 52, 32, 26, 48, 55, 6, 29, 84, 2, 4, 18, 56, 7, 29, 93, 44, 71,
          3, 86, 66, 31, 65, 0, 79, 20, 65, 52, 13
      ]]
      capacities = [850]
      # [END data]
  
      # [START solve]
      solver.Init(values, weights, capacities)
      computed_profit = solver.Solve()
      # [END solve]
  
      # [START print_solution]
      print('optimal profit =', computed_profit)
      # [END print_solution]
  
  
  if __name__ == '__main__':
      main()
  # [END program]
  
new_contents: # Copyright 2010-2018 Google LLC
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  """A simple knapsack problem."""
  # [START program]
  # [START import]
  from __future__ import print_function
  from ortools.algorithms import pywrapknapsack_solver
  
  # [END import]
  
  
  def main():
      # Create the solver.
      # [START solver]
      solver = pywrapknapsack_solver.KnapsackSolver(
          pywrapknapsack_solver.KnapsackSolver.
          KNAPSACK_MULTIDIMENSION_BRANCH_AND_BOUND_SOLVER, 'KnapsackExample')
      # [END solver]
  
      # [START data]
      values = [
          360, 83, 59, 130, 431, 67, 230, 52, 93, 125, 670, 892, 600, 38, 48, 147,
          78, 256, 63, 17, 120, 164, 432, 35, 92, 110, 22, 42, 50, 323, 514, 28,
          87, 73, 78, 15, 26, 78, 210, 36, 85, 189, 274, 43, 33, 10, 19, 389, 276,
          312
      ]
      weights = [[
          7, 0, 30, 22, 80, 94, 11, 81, 70, 64, 59, 18, 0, 36, 3, 8, 15, 42, 9, 0,
          42, 47, 52, 32, 26, 48, 55, 6, 29, 84, 2, 4, 18, 56, 7, 29, 93, 44, 71,
          3, 86, 66, 31, 65, 0, 79, 20, 65, 52, 13
      ]]
      capacities = [850]
      # [END data]
  
      # [START solve]
      solver.Init(values, weights, capacities)
      computed_value = solver.Solve()
      # [END solve]
  
      # [START print_solution]
      packed_items = []
      packed_weights = []
      total_weight = 0
      print('Total value =', computed_value)
      for i in range(len(values)):
        if solver.BestSolutionContains(i):
          packed_items.append(i)
          packed_weights.append(weights[0][i])
          total_weight += weights[0][i]
      print('Total weight:', total_weight)
      print('Packed items:', packed_items)
      print('Packed_weights:', packed_weights)
      # [END print_solution]
  
  
  if __name__ == '__main__':
      main()
  # [END program]
  
subject: Add details to printed solution in knapsack.py