I'm not a fan of python so I was prepared to commiserate but...
Tuples, Sets, Dicts, Lists
These are all useful in every language... I don't use tuples that often, but lists/arrays and associative arrays/dictionaries/hashmaps are in every language and completely different from each other, and there are plenty of reasons to use sets when that is what your data actually is and you get easy access to set operations
Some of my coworkers say this too. The tests are generally garbage that don't test what they say they do. All this says is that you don't care how useful your tests are outside of checking a box