python统计文本字符串里面单词出现的频率
发布时间:2020-12-17 17:17:29 所属栏目:Python 来源:网络整理
导读:今天PHP站长网 52php.cn把收集自互联网的代码分享给大家,仅供参考。 python统计文本字符串里面单词出现的频率 # word frequency in a text# tested with Python24 vegaseat 25aug2005 # Chinese wisdom ...str1 = """Man
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python统计文本字符串里面单词出现的频率
# word frequency in a text # tested with Python24 vegaseat 25aug2005 # Chinese wisdom ... str1 = """Man who run in front of car,get tired. Man who run behind car,get exhausted.""" print "Original string:" print str1 print # create a list of words separated at whitespaces wordList1 = str1.split(None) # strip any punctuation marks and build modified word list # start with an empty list wordList2 = [] for word1 in wordList1: # last character of each word lastchar = word1[-1:] # use a list of punctuation marks if lastchar in [",",".","!","?",";"]: word2 = word1.rstrip(lastchar) else: word2 = word1 # build a wordList of lower case modified words wordList2.append(word2.lower()) print "Word list created from modified string:" print wordList2 print # create a wordfrequency dictionary # start with an empty dictionary freqD2 = {} for word2 in wordList2: freqD2[word2] = freqD2.get(word2,0) + 1 # create a list of keys and sort the list # all words are lower case already keyList = freqD2.keys() keyList.sort() print "Frequency of each word in the word list (sorted):" for key2 in keyList: print "%-10s %d" % (key2,freqD2[key2]) 以上内容由PHP站长网【52php.cn】收集整理供大家参考研究 如果以上内容对您有帮助,欢迎收藏、点赞、推荐、分享。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |