def calc_afinal(cp):
afinal=[]
for i in range(len(cp)):
ptmp = []
tmp = 0
for j in range(len(cp)):
if j != i:
row = []
row.insert(0,1/(cp[i]-cp[j]))
row.insert(1,-cp[j]/(cp[i]-cp[j]))
ptmp.insert(tmp,row)
tmp += 1
p=[1]
for j in range(len(cp)-1):
p = conv(p,ptmp[j])
afinal.append(numpy.polyval(p,1.0))
return afinal
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