1print(1 is 1)
2print(1 is 2)
3print(1 is not 1)
4print(1 is not 2)
5
6
7print([1, 2] is [1, 2])
8a = [1, 2]
9b = a
10print(b is a)
11
12# TODO: strings require special "is" handling, postponed
13# until qstr refactor.
14#print("a" is "a")
15