% cat examples/expr2.py 
from lpython import i32

A: list[i32] = [1, 2, 4, 5]
print(A[0], A[1], A[2], "...", A[-3], A[-2], A[-1])
% python examples/expr2.py 
1 2 4 ... 2 4 5
% lpython examples/expr2.py
...