分布式单词发音抓取机器人

class WordsList: 
 
    def __init__(self): 
        if(len(sys.argv)<2): 
            print 'Usage: %s filename' % sys.argv[0] 
            sys.exit(-1)     
        filePath = sys.argv[1] 
        self.t = [] 
        try: 
            for line in fileinput.input(filePath): 
                wordLen = len(line) 
                if( wordLen > 1  and  line[wordLen-1] == '\n'): 
                    word = line[0:wordLen-1] 
                    self.t.append(word) 
                else: 
                    self.t.append(line) 
            self.t.append('0') 
        except: 
            print 'constructing words list error.' 
            print 'maybe the provided file path is wrong.Check it twice.' 
            sys.exit(-2) 
        finally: 
            pass 
        print 'constructing words successfully...' 
             
    def front(self): 
        if(self.t[0]!='0'): 
            return self.t.pop(0) 
        else: 
            return self.t[0]