How to set the working directory when running on the cloud?

Community Cloud
1

TL;DR:
Imports which locally work fine, don’t work on streamlit cloud

Hello, I have a problem with setting working directory for the project run on the community cloud. I have the following code structure and my working directory is src because I have two parts of my application, and one of them is streamlit.

── README.md
├── requirements.txt
├── src
│   ├── some_package
│   │   ├── main.py
│   │   ├── another_file.py
│   │   
│   ├── streamlit_dashboard
│   │   ├── functions
│   │   │   ├── file.py
│   │   │   ├── file1.py
│   │   │   ├── __init__.py
│   │   ├── __init__.py
│   │   ├── main_streamlit.py 
│   │   └── pages
│   │       ├── __init__.py
│   │       ├── page_1.py
│   │       ├── page_2.py
│   │       └── page_3.py

In my code I have a certain structure of imports, which start from the level just under src/, e.g.:

from some_package.another_file import foo

Locally, I run it from src/ folder level and set PYTHONPATH='.':

streamlit run streamlit_dashboard.main_streamlit.py

and everything works fine. However after uploading it to the cloud, to keep it working, I need to rearrange structure of imports. Just like the working directory was where main_streamlit.py is.

I tried to set PYTHONPATH to "/mount/src/my_project_name/src" in secrets, but it doesnt make it work.

2

PYTHONPATH doesn’t point to the working directory. To change the working directory in any python program running anywhere, use os.chdir()

3

Thank you for the response. That’s a good point however it was not enough. Eventually I needed also to append sys.path:

import os; os.chdir("/mount/src/<project-name>/src")
import sys; sys.path.append("/mount/src/<project-name>/src/")

Maybe relative paths also could work but I tried various combinations and it is the only one that works.

4

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