统计分析模块更新，待测试，优化所有模块main.py文件，修复bug。

students/main.py

@@ -8,18 +8,19 @@ from contextlib import asynccontextmanager
 Students_API = APIRouter()
 Students_API.include_router(s_api)
 
-# 自测接口
-@asynccontextmanager
-async def S_Fastapi(app: FastAPI):
-    Base.metadata.create_all(engine1)
-    yield
-    engine1.dispose()
-
-app = FastAPI(title="学生管理系统",lifespan=S_Fastapi) # 这里必须把上面写的加上
-app.include_router(s_api,tags=["students"])
-
 
 if __name__ == "__main__":
+    # 自测接口
+    @asynccontextmanager
+    async def S_Fastapi(app: FastAPI):
+        Base.metadata.create_all(engine1)
+        yield
+        engine1.dispose()
+
+
+    app = FastAPI(title="学生管理系统", lifespan=S_Fastapi)  # 这里必须把上面写的加上
+    app.include_router(s_api, tags=["students"])
+
     def main():
         print("Hello from student-manage-system!")