Feature or enhancement

Proposal:

Following code produces not very clear error message (IMHO)

>>> all
<built-in function all>
>>> all in globals()
False
>>> del all
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
    del all
        ^^^
NameError: name 'all' is not defined

On my sight it well be better to tell that builtin cannot be deleted.

(fixed can be to cannot be)

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response