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how to tinker with app when developping #1049

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robido opened this issue Feb 28, 2020 · 4 comments
Closed
3 tasks done

how to tinker with app when developping #1049

robido opened this issue Feb 28, 2020 · 4 comments
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@robido
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robido commented Feb 28, 2020 •
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First check

  • I used the GitHub search to find a similar issue and didn't find it.
  • I searched the FastAPI documentation, with the integrated search.
  • I already searched in Google "How to interact with FastAPI app" and didn't find any information.

Description

I have a few SQLAlchemy models in my fastAPI app, and let's say I want to experiment, for instance, I want to develop a filter, and I need to tinker with the code to try a few things. How can I do that without having to create Schemas and endpoints for a model I just want to play with?

Additional context

The FastAPI docs give a method for debugging, would it be one way to handle it? Pause the program then write custom commands. Essentially, I am asking if there is the equivalent of an interactive shell, similar to what Django, Flask, or Laravel (tinker) offer. If not, what is the recommended workflow to tinker with models?
@robido robido added the question Question or problem label Feb 28, 2020
@Kilo59
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Kilo59 commented Feb 29, 2020

You can run uvicorn with --reload and it will redeploy a local development server everytime it detects a source file has changed.

uvicorn your_package.main:app --reload

https://www.uvicorn.org/deployment/

@robido
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robido commented Feb 29, 2020

Thanks @Kilo59 I tried that, but I get this error:
sqlalchemy.exc.UnboundExecutionError: Could not locate a bind configured on mapper mapped class User->user, SQL expression or this Session

I am using this repo: https://github.com/tiangolo/full-stack-fastapi-postgresql. The code works fine in Docker, so if I go to http://localhost/api/v1/users I get the expected results, but http://localhost:8000/api/v1/users shows the above error.

I'll try this now see if that helps:
tiangolo/full-stack-fastapi-template#7

@tiangolo
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What I would do is using VS Code, start an "Interactive Session", that's actually Jupyter underneath, that I think is more powerful than any other Python interactive shell, and then I would run commands there interactively, or actually, select sections of code in the editor and execute them in the interactive session (with Shift+Enter).

Check more info here: https://code.visualstudio.com/docs/python/jupyter-support

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Assuming the original issue was solved, it will be automatically closed now. But feel free to add more comments or create new issues.

@tiangolo tiangolo changed the title [QUESTION] how to tinker with app when developping how to tinker with app when developping Feb 24, 2023
@tiangolo tiangolo reopened this Feb 28, 2023
Repository owner locked and limited conversation to collaborators Feb 28, 2023
@tiangolo tiangolo converted this issue into discussion #7621 Feb 28, 2023

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