I know what you mean, but the issue the parent comment brought up is real and "bad" chats can contaminate future ones. Before switching off memories, I found I had to censor myself in case I messed up the system memory.

I've found a good balance with the global system prompt (with info about me and general preferences) and project level system prompts. In your example, I would have a "Python" project with the appropriate context. I have others for "health", "home automation", etc.