diff --git a/model/e_model.py b/model/epy_model.py
similarity index 96%
rename from model/e_model.py
rename to model/epy_model.py
index 580afd2..c256bc4 100644
--- a/model/e_model.py
+++ b/model/epy_model.py
@@ -1,45 +1,45 @@
-from sqlalchemy import *
-from datetime import datetime
-from sqlalchemy.orm import declarative_base,sessionmaker
-
-db_url = "mysql+pymysql://root:123456@127.0.0.1:3306/ai0824_stu?charset=utf8"
-
-engine = create_engine(db_url, pool_size=100,echo=False)
-
-Base = declarative_base()
-
-class Employment(Base):
-    __tablename__ = 's_employment'
-    id = Column(Integer
-                , primary_key=True
-                , autoincrement=True
-                , comment='编号,自增主键')
-    stu_id = Column(String(20)
-                  # , ForeingKey('s_student.stu_id')
-                  , unique=True
-                  , nullable=True
-                  , comment='学生学号，唯一')
-    class_name = Column(String(32))
-    company = Column(String(100))
-    salary = Column(Integer
-                    , default=0)
-    open_date = Column(DATETIME
-                     , default=datetime.now())
-    offer_date = Column(DATETIME
-                     , default=datetime.now())
-    work_date = Column(DATETIME
-                     , default=datetime.now()
-                     , onupdate=datetime.now)
-    is_delete = Column(Integer
-                   , default=0
-                     )
-
-
-Session = sessionmaker( bind = engine, autoflush = False, autocommit = False )
-
-def get_db():
-    db = Session()
-    try:
-        yield db
-    finally:
+from sqlalchemy import *
+from datetime import datetime
+from sqlalchemy.orm import declarative_base,sessionmaker
+
+db_url = "mysql+pymysql://root:123456@127.0.0.1:3306/ai0824_stu?charset=utf8"
+
+engine = create_engine(db_url, pool_size=100,echo=False)
+
+Base = declarative_base()
+
+class Employment(Base):
+    __tablename__ = 's_employment'
+    id = Column(Integer
+                , primary_key=True
+                , autoincrement=True
+                , comment='编号,自增主键')
+    stu_id = Column(String(20)
+                  # , ForeingKey('s_student.stu_id')
+                  , unique=True
+                  , nullable=True
+                  , comment='学生学号，唯一')
+    class_name = Column(String(32))
+    company = Column(String(100))
+    salary = Column(Integer
+                    , default=0)
+    open_date = Column(DATETIME
+                     , default=datetime.now())
+    offer_date = Column(DATETIME
+                     , default=datetime.now())
+    work_date = Column(DATETIME
+                     , default=datetime.now()
+                     , onupdate=datetime.now)
+    is_delete = Column(Integer
+                   , default=0
+                     )
+
+
+Session = sessionmaker( bind = engine, autoflush = False, autocommit = False )
+
+def get_db():
+    db = Session()
+    try:
+        yield db
+    finally:
         db.close()
\ No newline at end of file