利用python处理文档中各字段出现的次数并排序

 import string
 path = 'waldnn'
 with open(path,'r') as text:
     words = [raw_word.strip(string.punctuation).lower() for raw_word in text.read().split()]
     words_index = set(words)
     counts_dict = {index:words.count(index) for index in words_index}

 for word in sorted(counts_dict,key=lambda x: counts_dict[x],reverse=True):
     print('{} -- {} times'.format(word,counts_dict[word]))