old_contents: import os
  import argparse
  import logging
  import traceback
  import logging
  import logging.config
  
  import voltron
  from .view import *
  from .core import *
  try:
      from .console import *
      HAS_CONSOLE = True
  except ImportError:
      HAS_CONSOLE = False
  
  log = logging.getLogger('main')
  
  def main(debugger=None):
      voltron.setup_logging('main')
  
      # Set up command line arg parser
      parser = argparse.ArgumentParser()
      parser.register('action', 'parsers', AliasedSubParsersAction)
      parser.add_argument('--debug', '-d', action='store_true', help='print debug logging')
      parser.add_argument('-o', action='append', help='override config variable')
      top_level_sp = parser.add_subparsers(title='subcommands', description='valid subcommands', dest='subcommand')
      top_level_sp.required = True
      view_parser = top_level_sp.add_parser('view', help='display a view', aliases=('v'))
      view_parser.register('action', 'parsers', AliasedSubParsersAction)
      view_sp = view_parser.add_subparsers(title='views', description='valid view types', help='additional help', dest='view')
      view_sp.required = True
  
      # Set up a subcommand for each view class
      pm = PluginManager()
      for plugin in pm.view_plugins:
          pm.view_plugins[plugin].view_class.configure_subparser(view_sp)
  
      if HAS_CONSOLE:
          Console.configure_subparser(top_level_sp)
  
      # Parse args
      args = parser.parse_args()
      if args.debug:
          voltron.config['general']['debug_logging'] = True
          voltron.setup_logging('main')
      voltron.config.update(options=dict((tuple(x.split('=')) for x in args.o)))
  
      # Instantiate and run the appropriate module
      inst = args.func(args, loaded_config=voltron.config)
      inst.pm = pm
      try:
          inst.run()
      except Exception as e:
          log.exception("Exception running module {}: {}".format(inst.__class__.__name__, traceback.format_exc()))
          print("Encountered an exception while running the view '{}':\n{}".format(inst.__class__.__name__, traceback.format_exc()))
      except KeyboardInterrupt:
          suppress_exit_log = True
      inst.cleanup()
  
new_contents: import os
  import argparse
  import logging
  import traceback
  import logging
  import logging.config
  
  import voltron
  from .view import *
  from .core import *
  try:
      from .console import *
      HAS_CONSOLE = True
  except ImportError:
      HAS_CONSOLE = False
  
  log = logging.getLogger('main')
  
  def main(debugger=None):
      voltron.setup_logging('main')
  
      # Set up command line arg parser
      parser = argparse.ArgumentParser()
      parser.register('action', 'parsers', AliasedSubParsersAction)
      parser.add_argument('--debug', '-d', action='store_true', help='print debug logging')
      parser.add_argument('-o', action='append', help='override config variable', default=[])
      top_level_sp = parser.add_subparsers(title='subcommands', description='valid subcommands', dest='subcommand')
      top_level_sp.required = True
      view_parser = top_level_sp.add_parser('view', help='display a view', aliases=('v'))
      view_parser.register('action', 'parsers', AliasedSubParsersAction)
      view_sp = view_parser.add_subparsers(title='views', description='valid view types', help='additional help', dest='view')
      view_sp.required = True
  
      # Set up a subcommand for each view class
      pm = PluginManager()
      for plugin in pm.view_plugins:
          pm.view_plugins[plugin].view_class.configure_subparser(view_sp)
  
      if HAS_CONSOLE:
          Console.configure_subparser(top_level_sp)
  
      # Parse args
      args = parser.parse_args()
      if args.debug:
          voltron.config['general']['debug_logging'] = True
          voltron.setup_logging('main')
      voltron.config.update(options=dict((tuple(x.split('=')) for x in args.o)))
  
      # Instantiate and run the appropriate module
      inst = args.func(args, loaded_config=voltron.config)
      inst.pm = pm
      try:
          inst.run()
      except Exception as e:
          log.exception("Exception running module {}: {}".format(inst.__class__.__name__, traceback.format_exc()))
          print("Encountered an exception while running the view '{}':\n{}".format(inst.__class__.__name__, traceback.format_exc()))
      except KeyboardInterrupt:
          suppress_exit_log = True
      inst.cleanup()
  
subject: Fix override default