上传文件至「model」

model/e_model.py

@@ -0,0 +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:
+        db.close()