Martti Kühne wrote:
You brush over the fact that *t is not limited to a replacement by a
comma-separated sequence of items from t, but *t is actually a
replacement by that comma-separated sequence of items from t INTO an
external context.


Indeed. In situations where there isn't any context for
the interpretation of *, it's not allowed. For example:

>>> x = *(1, 2, 3)
  File "<stdin>", line 1
SyntaxError: can't use starred expression here

But

>>> x = 1, *(2, 3)
>>> x
(1, 2, 3)

The * is allowed there because it's already in a context
where a comma-separated list has meaning.

--
Greg
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