feat: 初始化学生管理系统代码

database.py

@@ -0,0 +1,18 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+
+
+# 数据库引擎
+engine = create_engine("mysql+pymysql://root:123456@localhost/fastapi0914")
+# 会话工厂
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+Base=declarative_base()
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()