[Tutor] What is the difference between checking false?

[eryksun]

On Sat, Jun 15, 2013 at 11:15 PM, Jim Mooney <cybervigilante at gmail.com> wrote:
>
> ## Comparing different types for equality always fails:
>
> if '5' != 5:
>     print('oops')

It depends on the __eq__ and __ne__ methods defined by the types. int
and str have their own implementations of "rich comparisons". But
that's a subject for another thread and another time, when you've
gotten deeper into implementing your own classes.

> Finally, 1 and 0 are oh-so-special standins for True and False,
> that should have been strangled in the cradle.

As I already said, you can't return an int from __bool__ in 3.x. In
2.x, __nonzero__ can return 0 for False and a "non-zero" int for True
-- but only an int (not long, float, etc).