python : single liner

Question

'''why this code returns none'''
list = input().split(',').sort()

'''but this not give None'''
list = input().split(",")
list.sort()

Answer 1

The `None` came from (returmed by) sort(), as it sorts the `list` in place instead of returning a sorted copy of the `list` like the sorted() function.

Answer 2

Sunil Shrestha use sorted() as suggested by Ipang

list = sorted(input().split(','))

Answer 3

doesnt split function return any value?

Answer 4

means sort doesnt return value

Answer 5

Yes that's right