_1. Can use advanced Python libraries like numpy, pandas, matplotlib._ I would disagree that someone's knowledge of third-party libraries helps determine how g

_1. Can use advanced Python libraries like numpy, pandas, matplotlib._ I would disagree that someone's knowledge of third-party libraries helps determine how good they are at Python. Why not ask about the `array` package? What about using the functional builtin packages (eg - itertools, functools)? Memory management and optimizations are negligible, but I'd lump hose in with expert since I rarely see one of the