text: # Copyright 2010-2017 Google
  # 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.
  """Code sample to demonstrates how to build an interval."""
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  
  from ortools.sat.python import cp_model
  
  
  def IntervalSample():
    model = cp_model.CpModel()
    horizon = 100
    start_var = model.NewIntVar(0, horizon, 'start')
    duration = 10  # Python cp/sat code accept integer variables or constants.
    end_var = model.NewIntVar(0, horizon, 'end')
    interval_var = model.NewIntervalVar(start_var, duration, end_var, 'interval')
    print('start = %s, duration = %i, end = %s, interval = %s' %
          (start_var, duration, end_var, interval_var))
  
  
  IntervalSample()
  