attribute is accessed from Nonetype
Dave Angel
d at davea.name
Fri Aug 3 19:03:20 EDT 2012
On 08/03/2012 06:41 PM, Chris Angelico wrote:
> On Sat, Aug 4, 2012 at 8:20 AM, Dave Angel <d at davea.name> wrote:
>> I'm sorry, what's not clear? Nonetype is not the same as NoneType.
>> Python is case sensitive.
> There isn't a NoneType either. I get a NameError.
>
> ChrisA
NoneType isn't in the builtin namespace. It's in the types module.
import types
a = types.Nonetype
It's still special, because None is a singleton. In any case there are
a number of places where the string "NoneType" is produced,
>>> type(None)
<type 'NoneType'>
>>> None + 3
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for +: 'NoneType' and 'int'
>>> None[3]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'NoneType' object is not subscriptable
etc.
and it's in the docs, at least on page:
http://docs.python.org/library/constants.html
--
DaveA
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