diff --git a/工具v4/database_tools_2.py b/工具v4/database_tools_2.py
index 178315af..93e96799 100644
--- a/工具v4/database_tools_2.py
+++ b/工具v4/database_tools_2.py
@@ -3081,7 +3081,7 @@ def generateProDict(cursor): #从数据库的cursor中得到problems字典的con
 
 def generate_diff_dict(pro_dict): #根据pro_dict的使用数据生成diff_dict难度词典
     diff_dict = {}
-    for id in pro_dict:
+    for id in tqdm.tqdm(pro_dict,desc = "生成难度信息中"):
         usages = pro_dict[id]["usages"]
         if usages == []:
             diff_dict[id] = {"min":-1,"average":-1,"median":-1,"max":-1}