Reasons to switch to Python 3

look.py

#!/usr/bin/env python3.3
# -*- coding: utf-8 -*-
ಠ_ಠ = 42
print(ಠ_ಠ)

Output

$ python look.py
  File "look.py", line 3
    ಠ_ಠ = 42
    ^
SyntaxError: invalid syntax
$ ./look.py
42