Evaluating Polynomial coefficients

Question

I\'m trying to write a function that takes as input a list of coefficients (a0, a1, a2, a3.....a n) of a polynomial p(x) and the value x. The function will return p(x), whic

Answer 1

simple:

def poly(lst, x): 
  n, tmp = 0, 0
  for a in lst:
    tmp = tmp + (a * (x**n))
    n += 1

  return tmp

print poly([1,2,3], 2)

simple recursion:

def poly(lst, x, i = 0):
  try:
    tmp = lst.pop(0)
  except IndexError:
    return 0
  return tmp * (x ** (i)) + poly(lst, x, i+1)

print poly([1,2,3], 2)