尝试合并，所有代码需要调整from后文件路径。

stu_jiuye/main.py

@@ -1,7 +1,9 @@
-from fastapi import FastAPI
-from CURD_api import CURD
-from database import Base,engine
-import model
+from fastapi import FastAPI,APIRouter
+from stu_jiuye.CURD_api import CURD
+from stu_jiuye.database import Base,engine
+
+Shtudent_Jiuye = APIRouter()
+
 app=FastAPI()
 Base.metadata.create_all(engine)
 app.include_router(CURD,tags=['就业管理系统'])