`List.reverse()` should not return anything

[faze-geek]

I came across some inconsistencies with python while using reverse operation, I am not sure what should be expected with lpython as a None type is not supported here.

Snippet 1 - Maybe this can be caught as redefinition of a and not allowed?

def f():
    a :list[i32]= [1, 2, 3, 4]
    a = a.reverse()                     
    print(a)
f()

(lp) C:\Users\kunni\lpython>python try.py
None

(lp) C:\Users\kunni\lpython>src\bin\lpython try.py
[4, 3, 2, 1]

Snippet 2 - Here an empty list gets returned.

def f():
    a :list[i32]= [1, 2, 3, 4]
    b :list[i32] = a.reverse()
    print(b)
f()

(lp) C:\Users\kunni\lpython>python try.py
None

(lp) C:\Users\kunni\lpython>src\bin\lpython try.py
[]