Discussion on: What is the difference between ‘is’ and ‘==’ in python

[Lucas G. Terracino]

What would be a proper True "is" comparation?

Awesome topic btw.

[Dave Cridland]

The typical usages are if you do actually want to know if something is the same instance.

foo = True
if foo is True:  # True!

Also foo is None, which you've probably seen a lot of before, and useful with some constants if you're using them mostly by name, not value, like an enum type in other languages:

class enum:
  LEFT = 'Left'
  RIGHT = 'Right'

foo = enum.LEFT

print(foo is enum.LEFT)  # True! (And doesn't do a string comparison).

[Lucas G. Terracino]

Ok now is pretty clear, so at one poin if you change the value of foo to enum.RIGHT, this would be easier than checking if foo == "Right".

Thanks for the heads up!