当应用程序位于两个不同的文件中时，安装 function 如何在 fastapi 中工作？

Question

我有两个不同的 fastaoi 文件。我希望将 intergate 作为一个文件。 我已经发布了我的代码。 请查看它，让我知道您的想法和建议。

主文件

from fastapi import FastAPI
from app import submain as subapi

app = FastAPI()
app.mount("/subapi", subapi)

@app.get("/app")
def read_main():
    return {"message": "Hello World from main app"}

子主.py

from fastapi import FastAPI

subapi = FastAPI()
@subapi.get("/sub")
async def read_sub():
    return {"message": "Hello World from sub API"}

错误

$ uvicorn app.main:app --reload
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [43148] using statreload
INFO:     Started server process [43150]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     127.0.0.1:46334 - "GET /subapi/sub HTTP/1.1" 500 Internal Server Error
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/laptop-obs-123/anaconda3/envs/albert/lib/python3.8/site-packages/uvicorn/protocols/http/h11_impl.py", line 394, in run_asgi
    result = await app(self.scope, self.receive, self.send)
  File "/home/laptop-obs-123/anaconda3/envs/albert/lib/python3.8/site-packages/uvicorn/middleware/proxy_headers.py", line 45, in __call__
    return await self.app(scope, receive, send)
  File "/home/laptop-obs-123/anaconda3/envs/albert/lib/python3.8/site-packages/fastapi/applications.py", line 190, in __call__
    await super().__call__(scope, receive, send)
  File "/home/laptop-obs-123/anaconda3/envs/albert/lib/python3.8/site-packages/starlette/applications.py", line 111, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/laptop-obs-123/anaconda3/envs/albert/lib/python3.8/site-packages/starlette/middleware/errors.py", line 181, in __call__
    raise exc from None
  File "/home/laptop-obs-123/anaconda3/envs/albert/lib/python3.8/site-packages/starlette/middleware/errors.py", line 159, in __call__
    await self.app(scope, receive, _send)
  File "/home/laptop-obs-123/anaconda3/envs/albert/lib/python3.8/site-packages/starlette/exceptions.py", line 82, in __call__
    raise exc from None
  File "/home/laptop-obs-123/anaconda3/envs/albert/lib/python3.8/site-packages/starlette/exceptions.py", line 71, in __call__
    await self.app(scope, receive, sender)
  File "/home/laptop-obs-123/anaconda3/envs/albert/lib/python3.8/site-packages/starlette/routing.py", line 566, in __call__
    await route.handle(scope, receive, send)
  File "/home/laptop-obs-123/anaconda3/envs/albert/lib/python3.8/site-packages/starlette/routing.py", line 376, in handle
    await self.app(scope, receive, send)
TypeError: 'module' object is not callable

请让我知道如何在另一个位置或另一个文件中安装 fastapi 应用程序？

Answer 1

您需要使用路由器，请在此处查看 FAST API 文档
from fastapi import APIRouter

关于 FAST API 大应用

见下文：
submain.py

#!/user/bin/env python
# -*- coding: utf-8 -*-
from fastapi import APIRouter

subapi = APIRouter()

@subapi.get("/sub")
async def read_sub():
    return {"message": "Hello World from sub API"}

main.py ：

#!/user/bin/env python
# -*- coding: utf-8 -*-
from fastapi import FastAPI

import submain

app = FastAPI()
app.mount("/subapi", submain)


@app.get("/app")
def read_main():
    return {"message": "Hello World from main app"}

运行代码：

$ uvicorn main:app --reload
←[32mINFO←[0m:     Uvicorn running on ←[1mhttp://127.0.0.1:8000←[0m (Press CTRL+C to quit)
←[32mINFO←[0m:     Started reloader process [←[36m←[1m6616←[0m] using ←[36m←[1mwatchgod←[0m
←[32mINFO←[0m:     Started server process [←[36m1084←[0m]
←[32mINFO←[0m:     Waiting for application startup.
←[32mINFO←[0m:     Application startup complete.