My estimate of what you need to nail your first py job:
Be comfortable with dev environment tooling, common dev process, testing, write docs, good commit messages
Be advanced enough to grok all language constructs, including things like decorators and context managers
Read, understand, and improve python code in the wild
Learn mypy? It really improves your code
Land some open source patches to demonstrate you got all this
Good luck, it's not as big a hill as it looks from the bottom!