The type/object distinction and possible synthesis of OOP and imperative programming languages

[Ian Kelly]

On Tue, Apr 16, 2013 at 11:29 AM, Ethan Furman <ethan at stoneleaf.us> wrote:
>>> The four are bool, NoneType, slice and ellipsis, I believe.
>>
>>
>> --> import builtins
>> --> for n in dir(builtins):
>>
>> ...     if type(getattr(builtins, n)) is type:
>> ...         try:
>> ...             t = type(n, (getattr(builtins, n),), {})
>> ...         except TypeError as e:
>> ...             print(e)
>> ...
>> type 'bool' is not an acceptable base type
>> type 'memoryview' is not an acceptable base type
>> type 'range' is not an acceptable base type
>> type 'slice' is not an acceptable base type
>
>
> Well that bumps our count to five then:

Six.

>>> class test(type(...)): pass
...
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: type 'ellipsis' is not an acceptable base type