Hey guys where i am doing this wrong help me

Question

lists= input()
user_list= lists.split()
final_list=[]
for i in range(len(user_list)):
new= i.replace(i[0],"")
now=new+i[0]+"py"
final_list.append(now)
for x in range(len(final_list)):
print(final_list[x],end=" ")

Answer 1

for example if user_list = ["abc","def"]
for i in range (len(user_list)):
will be
for i in range(2)

now in loop i will become 0 and 1
so,basically u saying
0.replace()
which wont work

Answer 2

Ohhhhhhh now i get it
thank-you

Answer 3

replace method is for string ,not int

Answer 4

But where i am using int