list-slice.py

a = [1, 2, 3, 4, 5, 6, 7, 8, 9]
a[2:5] # [3, 4, 5]

a[2:] # [3, 4, 5, 6, 7, 8, 9]

a[:5] # [1, 2, 3, 4, 5]

a[-4:] # [6, 7, 8, 9]

a[2:5] = ["foo", "bar", "baz"] # [1, 2, "foo", "bar", "baz", 6, 7, 8, 9]