Debugging with Pygeoapi

[C-Loftus]

Hi all,

This is partially a comment for the future reference of others, and partially a question to see if others have strategies for debugging while doing pygeoapi development.

When I am inside the container using the pygeoapi python interpreter, from what I can tell, the debugger for vscode slightly modifies the python interpreter being used and as a result, JInja2 fails, prevents pygeoapi from launching, and throws an error AttributeError: module 'posixpath' has no attribute 'sep'

This bug is the result of an older jinja version I believe that is now fixed but not yet updated.

pallets/jinja#1697

I wanted to write this to both document it for others, since it is a confusing error, and also see if anyone had workarounds they like.

An example config to reproduce this in launch.json would be the following. I am running it inside a devcontainer in vscode.

        {
            "name": "Python Debugger: Module",
            "python": "/usr/bin/python3",
            "type": "debugpy",
            "request": "launch",
            "module": "gunicorn",
            "args": [
                "pygeoapi.flask_app:APP"
            ]
        },