environment/lib/python2.7/site-packages/IPython/config/application.py
def catch_config_error(method, app, *args, **kwargs):
    """Method decorator for catching invalid config (Trait/ArgumentErrors) during init.

    On a TraitError (generally caused by bad config), this will print the trait's
    message, and exit the app.
    
    For use on init methods, to prevent invoking excepthook on invalid input.
    """
    try:
        return method(app, *args, **kwargs)
    except (TraitError, ArgumentError) as e:
        app.print_description()
        app.print_help()
        app.print_examples()
        app.log.fatal("Bad config encountered during initialization:")
        app.log.fatal(str(e))
        app.log.debug("Config at the time: %s", app.config)
        app.exit(1)
def catch_config_error(method, app, *args, **kwargs):
    """Method decorator for catching invalid config (Trait/ArgumentErrors) during init.

    On a TraitError (generally caused by bad config), this will print the trait's
    message, and exit the app.
    
    For use on init methods, to prevent invoking excepthook on invalid input.
    """
    try:
        return method(app, *args, **kwargs)
    except (TraitError, ArgumentError) as e:
        app.print_description()
        app.print_help()
        app.print_examples()
        app.log.fatal("Bad config encountered during initialization:")
        app.log.fatal(str(e))
        app.log.debug("Config at the time: %s", app.config)
        app.exit(1)
def catch_config_error ( method , app , * args , * * kwargs ) : try : return method ( app , * args , * * kwargs ) except ( TraitError , ArgumentError ) as e : app . print_description ( ) app . print_help ( ) app . print_examples ( ) app . log . fatal ( "Bad config encountered during initialization:" ) app . log . fatal ( str ( e ) ) app . log . debug ( "Config at the time: %s" , app . config ) app . exit ( 1 )
Method decorator for catching invalid config (Trait/ArgumentErrors) during init.

    On a TraitError (generally caused by bad config), this will print the trait's
    message, and exit the app.
    
    For use on init methods, to prevent invoking excepthook on invalid input.
Method decorator for catching invalid config ( Trait / ArgumentErrors ) during init .