how to convert matlab function with interp1 using two array and reference, to python with interp1d

Question

I used my matlab code like this

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Fas=[1.4, 1.4, 1.3]
Fvs=[1.5, 1.4, 1.3]

if S<=0.1
Fa=Fas(1);
Fv=Fvs(1);
if S<=0.2
Fa=interp1([0.1 0.2],[F