def checkrc(defns,rcv0):
    '''check rc's of things in defns against previously stored values
    return a string indicating those that have changed
    '''
    rcv1 = getrc(defns,2)
    return ' '.join(["%s %s-->%s" % (x,v,w) for x,v,w in zip(defns.split(),rcv0.split(),rcv1.split()) if v!=w])
check rc's of things in defns against previously stored values
    return a string indicating those that have changed
    
recipes/Python/496791_Reference_count_checking/recipe-496791.py