[SciPy-user] splines with extrapolation and derivatives

hi all, I need Python splines soft (1-d, 2-d, 3-d preferably general n-d) that is capable to do extrapolation. Having derivatives in extrapolated points (df/dx, where x.ndim = n) is highly preferable. Are there any numpy / scipy / other Python tools capable of this? Thank you in advance, D.