On 2021-05-31 15:55, Paul Bryan wrote:
If you're proposing prevention of monkey patching Ellipsis, I think
you'll have to go all-in on all builtins.
For example:
str = int
str
<class 'int'>
str == int
True
If you rebind str to int, the repr of str will say <class 'int'>, so you
can tell that something's happened, but the repr of ... is always
'Ellipsis', even though you've rebound Ellipsis.
On Mon, 2021-05-31 at 11:37 -0300, André Roberge wrote:
In Python `...` is referred to as `Ellipsis` and cannot be assigned to.
Yet, one can assign any value to the name `Ellipsis`.
Consider the following:
```
>>> ...
Ellipsis
>>> ... == Ellipsis
True
>>> Ellipsis
Ellipsis
>>> Ellipsis = 3
>>> Ellipsis
3
>>> ... = 4
File "<stdin>", line 1
... = 4
^
SyntaxError: cannot assign to Ellipsis
>>> # But I just did assign a new value to the name Ellipsis above.
>>> Ellipsis
3
>>> ...
Ellipsis
>>> ... == Ellipsis
False
```
For consistency, `Ellipsis` (the name) should **always** refer to the
same object that `...` refers to, so that both could not be assigned a
new value.
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