Python apps without the template pain points #12478
Description
When building a python app from scratch using the python integration there are some rough edges:
When not using uv:
❌ No virtual environment is created. The error you get is an obscure DCP error saying that .venv/Scripts/python cannot be found. (improved by Python hosting: Support .venv lookup by walking up parent directories #12616, we look in folders that VS code can create.)Add Python and uv installation validation with user notifications #12787, Python hosting: Support .venv lookup by walking up parent directories #12616❌ There's no instruction about how to get out of this state. We need to do this Add virtual environment validation notification for Python resources #12086 (which is similar to what dev tunnels does). To explain what the user should do.Add Python and uv installation validation with user notifications #12787❌ When you attempt to build the python app in this state, it will generate an empty Dockerfile and fail with an obscure error.✅ Building container images works (Generate fallback Dockerfile for Python apps without UV support #12049)
When using uv:
- ✅ ~If uv is not installed, we need to tell the user to install it (we don't do this yet). ~Add Python and uv installation validation with user notifications #12787
- ✅ Building container images works