[docs] [issue38099] __dict__ attribute is incorrectly stated to be read-only

[Steven D'Aprano]

Steven D'Aprano <steve+python at pearwood.info> added the comment:

"The implementation adds a few special read-only attributes to several object TYPES" [emphasis added]

py> class MyType:
...     pass
...
py> MyType.__dict__ = {}
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: attribute '__dict__' of 'type' objects is not writable



> What is the difference between an object and an instance?

In general, nothing. But ``object.__dict__`` refers to the special builtin *class* called "object". In hindsight, we should have called it Object, so we could more easily distinguish between the *class* called "object" and *instances* of that class.


py> print(object)  # the class/type itself
<class 'object'>

py> print(object())  # an instance of object
<object object at 0xb7ce1cd0>

The docs are correct here, but if you care to suggest some improvements, we will consider them.

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nosy: +steven.daprano

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<https://bugs.python.org/issue38099>
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