diff --git a/工具v2/database_tools.py b/工具v2/database_tools.py
index 3ec01401..615aa0ce 100644
--- a/工具v2/database_tools.py
+++ b/工具v2/database_tools.py
@@ -173,6 +173,23 @@ def generate_number_set(string,*thedict): #根据可能含有":"和","的题号
     else:
         return "输入参数有误"
     
+def generate_classid(string): #返回班级列表
+    string = re.sub(r"[\n\s]","",string).strip()
+    while not string[-1] in "0123456789":
+        string = string[:-1]
+    string = RefinePunctuations(string)
+    string_list = string.split(",")
+    numbers_list = []
+    for s in string_list:
+        if not ":" in s:
+            numbers_list.append(s.zfill(2)+"班")
+        else:
+            start,end = s.split(":")
+            for ind in range(int(start),int(end)+1):
+                numbers_list.append(str(ind).zfill(2)+"班")
+    return numbers_list #返回2位班级号列表
+
+    
 def generate_id_set(string,*thedict): #除了生成题号列表外, 还能根据首字母生成基础知识编号列表或课时目标列表
     if re.findall(r"[BXK]",string) == []:
         if thedict == ():