text: # This file is part of the pyMOR project (https://www.pymor.org).
  # Copyright pyMOR developers and contributors. All rights reserved.
  # License: BSD 2-Clause License (https://opensource.org/licenses/BSD-2-Clause)
  
  
  class Counter:
  
      def __init__(self, start=0):
          self.value = start
  
      def inc(self):
          self.value += 1
          return self.value
  