> What about math.pow(0.0, -1.0)? Should it return -inf or raise ZeroDivisionError?

Neither: it should raise ValueError, as it does now. This matches IEEE 754 along with the math module's mapping of IEEE 754 floating-point exceptions to Python exceptions.

> And what about math.pow(-0.0, -inf)?

This should return inf, the same as math.pow(0.0, -inf). The relevant clauses of the C standard and IEEE 754 cover both these cases; I should have written `math.pow(±0.0, -inf)` throughout my previous message.