spliting on ":"

[Peter Hansen]

Cyril Bazin wrote:
> I agree. None is an object! If you want to compare an object to another 
> object why not using "=="?

The term "compare" is ambiguous.  If you want to compare for *identity*, 
you use "is".  If you want to compare for equality, you use "==".  In 
most cases with None you are interested in identity, not equality.  It's 
that simple.

As I said, the archives have extensive discussions about this with lots 
of the nuances already covered in far more detail than I'm going to do 
again in this thread.  (The advice was free, so you're quite welcome to 
consider it to be worth what you paid.)

-Peter