Mo Reese10,731 Points
Getting back a "None"
I passed the challenge, but became confused when the editor refused to show me a preview & told me to 'check my code'. When i went to work spaces, all I got was: None None None... (x10) When I thought I would get [0, 1, 2, 3,etc].
my_list =  for i in range(0, 10, 1): print (my_list.append(i))
Can someone please tell me what I am missing & why i did not get the expected result of a list with int 0 thru 9?
Vivian Tung1,844 Points
Hey! I thought this would give me the list too when I first looked at it. The trouble is that
is a NoneType, meaning that it adds (i) to the list, but isn't the list itself. So printing that statement won't give anything other than None.
To get the full list, you could just separate the commands.
Hope this helped!
From the docs
You might have noticed that methods like insert, remove or sort that only modify the list have no return value printed – they return the default None. This is a design principle for all mutable data structures in Python.