python统计字词练习

方法一：

 import operator
 from nltk.corpus import stopwords
 stop_words = stopwords.words('English')#目的是去除人称代词等，注意根据编译提示下载相应库

 speech_text = '''
 He is a good boy
 She is a good girl
 We are very nice
 Hello boy hello boy
 hello girl hello girl
 hello dog
 hello cat
 hello pig
 '''
 speech = speech_text.lower().split()
 dic = {}
 for word in speech:
     if word not in dic:
         dic[word] = 1 #给词典赋值
     else:
         dic[word] = dic[word] + 1
 swd = sorted(dic.items(), key = operator.itemgetter(1),reverse = True)
 #stop_words
 for k,v in swd:
     if k not in stop_words:
         print(k,v)

 print(swd)

方法二：

 import operator
 from nltk.corpus import stopwords
 stop_words = stopwords.words('English')#目的是去除人称代词等，注意根据编译提示下载相应库

 speech_text = '''
 He is a good boy
 She is a good girl
 We are very nice
 Hello boy hello boy
 hello girl hello girl
 hello dog
 hello cat
 hello pig
 '''
 speech = speech_text.lower().split()
 from collections import Counter
 c = Counter(speech)
 for sw in stop_words:
     del c[sw]
 print(c.most_common(10)) #打印前10项