diff --git a/04-CustomLibrary/Custometest/cmd_cer.py b/04-CustomLibrary/Custometest/cmd_cer.py
index 0c9c47f..300b8c8 100644
--- a/04-CustomLibrary/Custometest/cmd_cer.py
+++ b/04-CustomLibrary/Custometest/cmd_cer.py
@@ -224,7 +224,14 @@ class Order:
             return "ture"
         else:
             return "flase"
-
+    # 获取单层列表索引
+    def Index(self,list,value):
+        n = 0
+        for a in list:
+            if a!=value:
+                n+=1
+            else:
+                return  n
 
 
 if __name__ == '__main__':