old_contents: scalar_from_cli_varfile = 'This value is not taken into use because this ' \
                          + 'variable already exists in vars_from_cli.py'
  scalar_from_cli_varfile_2 = 'Variable from second variable file from cli'
  
new_contents: def get_variables():
      return {
          'scalar_from_cli_varfile'  : ('This variable is not taken into use '
                                        'because it already exists in '
                                        'vars_from_cli.py'),
          'scalar_from_cli_varfile_2': ('Variable from second variable file '
                                        'from cli')
          }
  
  
  
  
subject: use 'get_variables'