whats wrong in this code

Question

class arr:
def __init__(self,l):
self.l=l
def __add__(self, other):
i=0
p=[]
if len(self.l)==len(other.l):
while i<len(self.l):
p.append(self.l[i]+other.l[i])
return p
p=arr([1,2,3])
q=arr([1,2,3])
print(p+q)

Answer 1

You forgot to increment i within that while loop, better option is to use a for loop so you won't forget stuff like this in the future!

Answer 2

oh thanks👍👍