diff --git a/models/class_model.py b/models/class_model.py
index f6134ae..23c9bc1 100644
--- a/models/class_model.py
+++ b/models/class_model.py
@@ -51,4 +51,4 @@ class Classes( Base ):              # 在python里的名字
                        , default = 0       # 声明默认值是"0，未删除"
                        , server_default = text("0")
                        , nullable = False  # 声明是"非空"
-                       )
+                       )
\ No newline at end of file