[Python-Dev] NoneType(None) raises exception
solipsis at pitrou.net
Fri Apr 26 09:01:07 CEST 2013
On Thu, 25 Apr 2013 16:09:41 -0700
Ethan Furman <ethan at stoneleaf.us> wrote:
> We just fixed NoneType() to return None instead of raising an exception.
> Another use-case for calling NoneType is working with ORMs:
> result = 
> for field in row:
> type = get_type(field) # returns int, bool, str, NoneType, ...
I don't understand what the use case is. If you already have a value of
None, why do you call NoneType on it again?
Perhaps you should write:
if not isinstance(type, field):
field = type(field)
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