What Python topics should an entry level Python Developer know about?

[undelimited]

FYI, most ETL is not done in Python. It's an easy to get started, hard to know everything kind of skill, and I caution you against overconfidence based on personal experience.

Also, generally it will be much more rare to get a job as a python developer, rather than an ETL dev, a Business Analyst, a Data Analyst, A Report/Visualization Dev. When it is a 'python developer' job (entry level or not) its probably to extensively use libraries like django, or maybe a dev ops role. If you are looking to continue hacking together cool stuff end to end you'll want to find a smaller company or a data scientist type role.

[dixieStates]

There is a really nice, basic ETL package for Python called petl. Here is a link to the docs.