Why isn't this working?

Question

class Polynomial():

""""Polynomial that takes a list of the coefficients of a polynomial in its initializer"""

def __init__(self,coeffs1,coeffs2,coeffs3,coeffs4,coeffs5,coeffs6,coeffs7):
self.coeffs1 = coeffs1
self.coeffs2 = coeffs2
self.coeffs3 = coeffs3
self.coeffs4 = coeffs4
self.coeffs5 = coeffs5
self.coeffs6 = coeffs6
self.coeffs7 = coeffs7

def value(*coeffs,x):
n = len(coeffs)
highest_power = n - 1
max_index = highest_power
v = 0
for i in range(max_index+1):
v += coeffs[i]*x**(n-i-1)
return v
p = Polynomial(3, 0,0,0,0,-5,10)
p.value(1)

Answer 1

Hi, nai

Your code has some syntax errors, kindly complete the python course first! If you wanna learn fast then I prefer "Python Core" course!

Have a nice day! Enjoy Sololeaening!

Regards,
TT

Answer 2

nai

What if there is more than 10 values? So for every value doing self.coeff is not worth so what you can do. You can initialise like this:

def __init__(self, *coeff):
self.coeff = list(coeff)

And also your defined function "value" should have 1st parameter as self.

And 3rd thing

max_index + 1 is equal to n so you can directly write range(n)

max_index + 1 = n?

max_index + 1 = highest_power + 1 = n - 1 + 1 = n

Now here is your solution:

https://code.sololearn.com/c3KNAiAWZG8u/?ref=app

Answer 3

if both function are in a class definition, then the second one should be either a static method, or have a first 'self' argument ;P