测试3...

database.py

@@ -0,0 +1,18 @@
+from sqlalchemy import *
+from sqlalchemy.orm import declarative_base,sessionmaker
+
+db_url = "mysql+pymysql://root:123456@127.0.0.1:3306/ai0824?charset=utf8mb4"
+engine = create_engine(db_url)
+
+Base = declarative_base()
+Session = sessionmaker(bind=engine
+                       ,autoflush=False
+                       ,autocommit = False
+                       )
+
+def get_db():
+    db = Session()
+    try:
+        yield db
+    finally:
+        db.close()