> It specifically does it for division through zero as if it wants to be a junior grade calculator just for this one thing. Not just division by zero. math.

> It specifically does it for division through zero as if it wants to be a junior grade calculator just for this one thing. Not just division by zero. math.sqrt(-1) math.log(-2) are errors as well. I agree that using both errors and float('nan') is odd. Tbf, C mixes errors (for integers) and NaN (for floats).