math.pow(a,n) versus ** operator

[Fredrik Lundh]

Kirby wrote:
> However, ** also seems just plain wrong when raising a
> negative to the 0th power:
>
>   >>> -1**0           # this is wrong
>   -1

quoting the language reference:

    "The power operator binds more tightly than unary
    operators on its left; it binds less tightly than unary
    operators on its right"

in other words, you're calculating -(1**0), not (-1)**0

>>> x = -1
>>> x ** 0
1

</F>