Add a --factory parameter like in uvicorn to run FastAPI applications not only through variables but also through functions

[ivankarmanow]

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Example Code

fastapi run --factory app.main

Description

In uvicorn there is a --factory parameter that allows you to pass as ASGI app not only variables, but also functions that return an ASGI app. I suggest adding the same parameter to fastapi-cli or changing the process of searching for a variable with FastAPI app so that factory functions are also found

Operating System

Linux, Windows

Operating System Details

No details

Python Version

3.12

Additional Context

No response

[adamhadani]

👍 this will be great to have.