I actually don't remember the details, I haven't used numpy in 4-5 years. I remember being bitten a few times by some operators that had a different behavior ba

I actually don't remember the details, I haven't used numpy in 4-5 years. I remember being bitten a few times by some operators that had a different behavior based on how you had arrived to what looked to be the same data. These were issues I don't remember encountering with e.g. Mathematica, MatLab or R, but then, I was manipulating different kinds of data. Next time I find myself manipulating numerical data, I'll definitely take a look at Pandas!