AssertionError: No project key defined while deploying Streamlit web app

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1

I was not able to deploy my Streamlit program that executes locally without an issue. Below is the traceback for the problem:

Traceback (most recent call last):

  File "/home/appuser/venv/lib/python3.10/site-packages/streamlit/runtime/scriptrunner/script_runner.py", line 565, in _run_script

    exec(code, module.__dict__)

  File "/app/income-and-expenses-tracker/main.py", line 13, in <module>

    import database as db

  File "/app/income-and-expenses-tracker/database.py", line 10, in <module>

    deta = Deta(project_key=DETA_KEY)

  File "/home/appuser/venv/lib/python3.10/site-packages/deta/__init__.py", line 33, in __init__

    project_key, project_id = _get_project_key_id(project_key, project_id)

  File "/home/appuser/venv/lib/python3.10/site-packages/deta/utils.py", line 8, in _get_project_key_id

    raise AssertionError("No project key defined")

AssertionError: No project key defined

The line of code deta = Deta(project_key=DETA_KEY) in database.py should not has any problem in my opinion as I use a python package called python-dotenv to retrieve my private project_key that is stored in a .env file and the .env file is being hidden by including it in a .gitignore file.

Link to the GitHub repository of the project:

2

If the .env file is not in your github repo, how can the application know what is stored in it?

You migh want to read about secrets management in Streamlit Cloud.

3

Thank you very much for your reminder!!! :rofl::rofl::rofl:
I forgot that the .env file was not stored in the GitHub repository and it works when I apply your solution.