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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def is_prived(usr_rule, def_rule):
    '''
    Compare between two role string.
    '''
    for iii in range(4):
        if def_rule[iii] == '0':
            continue
        if usr_rule[iii] >= def_rule[iii]:
            return True

    return False