diff --git a/app/api_bp.py b/app/api_bp.py
index 45cd5ea..59e2113 100644
--- a/app/api_bp.py
+++ b/app/api_bp.py
@@ -1,8 +1,7 @@
 import json
+
 from flask import Blueprint
-from wordfreqCMD import *
-from Article import get_today_article, load_freq_history
-import pickle_idea
+
 import pickle_idea2
 
 path_prefix = '/var/www/wordfreq/wordfreq/'
@@ -16,7 +15,7 @@ def helper(res, result):
     for item in res:
         if type(res[str(item)]) == 'dict':
             helper(res[str(item)], result)
-        if type(res[str(item)])== 'list':
+        if type(res[str(item)]) == 'list':
             for i in range(len(res[str(item)])):
                 helper(res[str(item)][i], result)
         result.append(str(item))
@@ -29,11 +28,11 @@ def api_bp(username):
     result = []
     user_freq_record = path_prefix + 'static/frequency/' + 'frequency_%s.pickle' % (username)
     s = pickle_idea2.load_record(user_freq_record)
-    wordlist = helper(s,result)
+    wordlist = helper(s, result)
     print(json.dumps(s))
     results = {}
 
     for word in wordlist:
         results[word] = len(s[word])
 
-    return results
\ No newline at end of file
+    return results