fastapi 日志记录错误并且 swagger 不起作用

Question

我正在使用 fastapi 制作一个 REST API。

我只是想知道为什么每当我执行服务器时都会收到以下消息。

INFO:     Started server process [97154]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
--- Logging error ---
Traceback (most recent call last):
  File "/usr/lib/python3.10/logging/__init__.py", line 1100, in emit
    msg = self.format(record)
  File "/usr/lib/python3.10/logging/__init__.py", line 943, in format
    return fmt.format(record)
  File "/usr/lib/python3.10/logging/__init__.py", line 678, in format
    record.message = record.getMessage()
  File "/usr/lib/python3.10/logging/__init__.py", line 368, in getMessage
    msg = msg % self.args
TypeError: %d format: a real number is required, not str
Call stack:
  File "mYlOcAtIoN/src/main.py", line 14, in <module>
    uvicorn.run(app, host='0.0.0.0', port='8000')
  File "mYlOcAtIoN/venv/lib/python3.10/site-packages/uvicorn/main.py", line 461, in run
    server.run()
  File "mYlOcAtIoN/venv/lib/python3.10/site-packages/uvicorn/server.py", line 67, in run
    return asyncio.run(self.serve(sockets=sockets))
  File "/usr/lib/python3.10/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "mYlOcAtIoN/venv/lib/python3.10/site-packages/uvicorn/server.py", line 84, in serve
    await self.startup(sockets=sockets)
  File "mYlOcAtIoN/venv/lib/python3.10/site-packages/uvicorn/server.py", line 174, in startup
    self._log_started_message(listeners)
  File "mYlOcAtIoN/venv/lib/python3.10/site-packages/uvicorn/server.py", line 215, in _log_started_message
    logger.info(
Message: 'Uvicorn running on %s://%s:%d (Press CTRL+C to quit)'
Arguments: ('http', '0.0.0.0', '8000')

下面是main.py。

import uvicorn as uvicorn

app = FastAPI()
# Skip some settings

if __name__ == '__main__':
    uvicorn.run(app, host='0.0.0.0', port='8000')

另外，我无法在 swagger 和 redocs 中获得任何内容，而我可以获得 REST 方法的结果。

Answer 1

您需要将端口int和应用程序对象更改为str如下所示：

if __name__ == "__main__":
    uvicorn.run("main:app", host="0.0.0.0", port=8000)