diff --git a/app/wordfreqCMD.py b/app/wordfreqCMD.py
index e56ba0c..dc231b9 100644
--- a/app/wordfreqCMD.py
+++ b/app/wordfreqCMD.py
@@ -39,7 +39,8 @@ 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 = '\_©~<=>+-/[]*&$%^@.,?!:;#()"“”—‘’{}|' # 把里面的字符都去掉
+    special_characters = '\_©~<=>+-/[]*&$%^@.,?!:;#()"“”—‘’{}|《》【】、！￥（）；：？。，' # 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('--', ' ')
@@ -103,6 +104,7 @@ if __name__ == '__main__':
     for x in sort_in_descending_order(L):
         print('%s\t%d\t%s' % (x[0], x[1], youdao_link(x[0])))#函数导出
 
+
     # 把频率的结果放result.html中
     make_html_page(sort_in_descending_order(L), 'result.html') 
 
@@ -117,6 +119,7 @@ if __name__ == '__main__':
     # 合并频率
     lst_history = pickle_idea.dict2lst(d)
     d = pickle_idea.merge_frequency(L, lst_history)
+
     pickle_idea.save_frequency_to_pickle(d, 'frequency.p')
 
 
diff --git a/requirements.txt b/requirements.txt
index e2d1e1f..2746a3b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
 Flask==1.1.2
 selenium==3.141.0
 PyYAML~=6.0
-pony==0.7.16