Use cases for del
daniel.dittmar at sap.corp
Fri Jul 8 17:50:03 CEST 2005
Scott David Daniels wrote:
> Testing for None should be an is-test (not just for speed). In
> older pythons the == result wasn't necessarily same as is-test.
> This made sense to me after figuring out NULL in database stuff.
NULL in SQL databases has nothing to do with Python None. I'm quite sure
that None == None always returned boolean true.
In a SQL database, NULL = NULL will always return NULL, which is prety
much the same as FALSE. Except for NOT, AS NOT NULL is NULL.
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