Please help me to resolve my issue on mergesort python got after a lot of effort I m unable to get my expected output

Question

It gives same list as out which I entered as input
I don't know why it seems to ab all okk please help me to find error here I used two function one for merge the to sorted list and another for sort the divided list
https://code.sololearn.com/cZ20rHp0xtwu/?ref=app

Answer 1

In line no. 16 chamge 'if' to 'while', otherwise it will execute only once.

Answer 2

It still not working for another input😞

Answer 3

In line 10,
left = mergesort(left)
In line 11,
right = mergesort (right)

You are not assigning them to variables, thats why it is using old value