forked from mrlan/EnglishPal
				
			通过正则表达式保留英文字符和'特殊字符
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				|  | @ -8,6 +8,7 @@ import string | |||
| import operator | ||||
| import os, sys # 引入模块sys,因为我要用里面的sys.argv列表中的信息来读取命令行参数。 | ||||
| import pickle_idea | ||||
| import re | ||||
| 
 | ||||
| def freq(fruit): | ||||
|     ''' | ||||
|  | @ -39,11 +40,11 @@ def file2str(fname):#文件转字符 | |||
| 
 | ||||
| 
 | ||||
| def remove_punctuation(s): # 这里是s是形参 (parameter)。函数被调用时才给s赋值。 | ||||
|     special_characters = '\_©~<=>+/[]*&$%^@.,?!:;#()"“”—‘’{}|' # 把里面的字符都去掉 | ||||
|     for c in special_characters: | ||||
|         s = s.replace(c, ' ') # 防止出现把 apple,apple 移掉逗号后变成 appleapple 情况 | ||||
|     s = s.replace('--', ' ') | ||||
|     s = s.strip() # 去除前后的空格 | ||||
| 
 | ||||
|     cop = re.compile("[^-^a-z^A-Z^\\']")  # 通过正则表达式保留英文字符和'特殊字符 | ||||
|     s = cop.sub(' ', s) | ||||
|     s = s.strip('-')     #去除头尾连字符 | ||||
|     s = s.strip()  # 去除前后的空格 | ||||
| 
 | ||||
|     if '\'' in s: | ||||
|         n = len(s) | ||||
|  | @ -60,6 +61,7 @@ def remove_punctuation(s): # 这里是s是形参 (parameter)。函数被调用 | |||
|         return s | ||||
| 
 | ||||
| 
 | ||||
| 
 | ||||
| def sort_in_descending_order(lst):# 单词按频率降序排列 | ||||
|     lst2 = sorted(lst, reverse=True, key=lambda x: (x[1], x[0])) | ||||
|     return lst2 | ||||
|  |  | |||
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