def gpp(argv=None):
    """Shortcut function for running the previewing command."""
    if argv is None:
        argv = sys.argv[1:]
    argv.insert(0, 'preview')
    return main(argv)
def gpp ( argv = None ) : if argv is None : argv = sys . argv [ 1 : ] argv . insert ( 0 , 'preview' ) return main ( argv )
Shortcut function for running the previewing command.