for word in words 只循环一次的问题

最新推荐文章于 2025-03-14 19:30:40 发布

原创最新推荐文章于 2025-03-14 19:30:40 发布 · 3.2k 阅读

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本文探讨了一个关于Python中命令行解析的问题，特别是当使用split方法处理字符串时出现的不同结果。通过对代码片段的分析，作者尝试找出导致差异的原因，并寻求解决方案。

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class Lexicon(object):
    def _init_(self):
        self.directions=('south','north','west','east')
        self.verbs=('go','kill','eat','run',
                    'tell','shoot','sing','love')
        self.stops=('the','in','of','to','via')
        self.nouns=('bear','princess','MissHei','tiger','dragon')
        self.sen=[]
    def scan(self,sentence):
        self.sentence = sentence
        print self.sentence
        sentence=self.sentence.split(' ')
        print sentence
        self.sen=[]
        for word in sentence:
            print word 
            '''
            if word in self.directions:
                self.sen.append(('direction',word))
            elif word in self.verbs:
                self.sen.append(('verb',word))
            elif word in self.stops:
                self.sen.append(('stop',word))
            elif word in self.nouns:
                self.sen.append(('noun',word))
            else: 
	            try:
	                self.sen.append(('number',int(word)))
	            except ValueError:
	                self.sen.append(('error',word))
	           '''   
	    return self.sen
lexicon = Lexicon()
lexicon._init_()
 
print lexicon.scan("go north to kill the bear")
sentence="go north to kill the bear"
sentence=sentence.split(' ')
print sentence
for word in sentence:
    print word
sentences=['a','b','c']
print sentences
for word in sentences:
    print word