def format_survival_rate():
    """cr-rate

    Usage: cr-rate <session-file>

    Calculate the survival rate of a session.
    """
    arguments = docopt.docopt(
        format_survival_rate.__doc__, version='cr-rate 1.0')
    with use_db(arguments['<session-file>'], WorkDB.Mode.open) as db:
        rate = survival_rate(db)

    print('{:.2f}'.format(rate))
def format_survival_rate ( ) : arguments = docopt . docopt ( format_survival_rate . __doc__ , version = 'cr-rate 1.0' ) with use_db ( arguments [ '<session-file>' ] , WorkDB . Mode . open ) as db : rate = survival_rate ( db ) print ( '{:.2f}' . format ( rate ) )
cr-rate

    Usage: cr-rate <session-file>

    Calculate the survival rate of a session.