old_contents: # Constants
  epsilon_s = 1.04e-10  # Permittivity of silicon [F/m]
  density = 2.3290  # Density of silicon [g cm^-3], wikipedia
new_contents: import os
  
  import scarce
  
  # Silicon constants
  epsilon_s = 1.04e-10  # Permittivity of silicon [F/m]
  density = 2.3290  # Density of silicon [g cm^-3], wikipedia
  
  # Software constants
  # Get package path
  package_path = os.path.dirname(scarce.__file__)  # Get the absolute path of this software
  FIXTURE_FOLDER = os.path.join(package_path, 'testing/fixtures')
  DATA_FOLDER = os.path.join(package_path, 'scarce/scarce')
subject: add scarce program constants