It doesn’t work. Just converting to a set destroys information you need. For example consider “aba”, “a”. You’re halfway on the rails but you didn’t pick quite the right data structure.

You can use a - b rather than a.difference(b). Maybe you don’t have to, either, just making sure you know.

People will advise not to use string as a name since Python has a builtin module named string. I personally would use s, t (for string and next string, a la i,j,k,… for index and next indexes) but there are those who don’t like the mathy variable names too so it’s a judgment call. Regardless, I don’t like string_edited as a name. The string isn’t an edited string. It’s a candidate edited string.

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They had me build an sms scheduler to integrate with Twilio using AWS services to handle scheduling. Yeah, this accurately portrayed the skills needed to do my job; it was also a paid interview, so they paid me for the time that it took to do which was pretty sweet. Edit: Trello -> Twilio b/c I can't think More on reddit.com

When I was getting ready for a tech interview I used Pluralsight. You’ll get either 20 or 30 days free and has great training videos instead of just trying random videos when doing searches in YouTube etc. It also helped me fill in any holes I had for what I was going for. I’ve been coding for close to 30 years and you’ll always be learning. Plus I’ve been on probably 10 interviews and biggest thing is speaking clearly. Have lots of notes etc printed around you. If it’s video stick them on the wall where you can see them. Lastly talk like you don’t need the job so you can relax. As long as you know the tech you should be fine.

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You've heard the phrase, "If all you have is a hammer, everything begins to look like a nail", right? Well, consider that features of a programming language (like Python) are different tools available in your toolkit. If all you have in your toolkit is an electric drill and a hammer and a circular saw, well, you can get a lot done, but some stuff you'll have a much harder time doing. Or if you do complete a job, you might have weird effects that you have to mitigate. Or your job might just be more complex. All those things you listed (a = [1,2,3]; a=b; del a; Class inheritance, new Obj, assign ref, Double underscore, with keyword, recursion, Null ref exceptions, DB exceptions, Empty Post responses, etc.) are things you should know how work and how to handle. Like you said, you're in the 70th percentile which means you're quite far along in your journey compared to others, but you still have a ways to go. Have faith. You'll get there. Learn a little bit every day. More on reddit.com