Best way to find NULL with an update cursor?

Discussion created by rgthurau on Apr 19, 2012
Latest reply on Apr 19, 2012 by rgthurau
I'm trying to get rid of my null values, which seems way too difficult. But, I've looked around and there seems to be multiple ways folks find them. I've seen:
where = "\"VALUE_1\" IS NULL"
is None
== null

Does anyone have an opinion, or even better, some documentation on the best way to call and find null values? Are there different applications for using different syntax?

Thanks for your input.