Very open ended question. So YMMV. Universal stuff: I’d say knowing your way around database connection packages is pretty universal (psycopg2, sqlalchemy, pymysql, etc). Comfort with an HTTP request package (like requests) is pretty universal. some cloud provider package/lib like boto3(AWS) Learn how to write unit tests. pytest and coverage packages are straight forward enough to set up. venv environment setup and usage to look like you know what you’re doing. set up a logger for your app so logs look good and the package handles the formatting for you. Backend / App Dev: If you want to be a backend/API dev, know how to work with flask, Django, or fastapi. Know how to write OOP Python classes. Understand common project structures for Python projects of many different sizes. Data analytics/engineering/science pandas package is a must numpy is good to know pyspark if you’re interested in big data The list goes on. This is too generic a question to go into a ton of detail, so maybe tighten the scope a little bit to get better answers if they don’t end up being very helpful. But a good rule of thumb is that anything that you gloss over as “less important” or “not with your time” when you’re new to programming is usually what separates the newbs from the pros (looking at you, testing, logging, project structure, etc, etc). It’s about being thorough the first time and doing things your future self will thank you for. More on reddit.com

There's too much ambiguity when you ask "what is a senior" on reddit. Check this website, I like this framework a lot: http://www.engineeringladders.com/ More on reddit.com

Yes, backend web developer, imo. That's what I used to do and if you work with frameworks like Django or FastAPI, you're working 90% in python. 10% with linux, filesystem, everything else, etc. More on reddit.com

I mean, it's hard to say, it varies. But I will say that these types of interviews are fantastically stupid, in my opinion. You can have many of these 'solutions' in your back pocket and still be surprised and perhaps fail the interview. I've had one where I basically had to build a chat app in a few hours. The role I have now had none of this nonsense in the interview, and same for the team lead role I had before this job. Keep practising, building skills, and just move on to the next one. More on reddit.com