On 2020-08-07 13:13, Jonathan Fine wrote:
We are discussing a proposal to extend Python's syntax to allow
d[1, 2, a=3, b=4]
We are also discussing the associated semantics. At present
d[1, 2]
d[(1, 2)]
are semantically equivalent.
Python behaves as though it's wrapping parentheses around the index:
d[1, 2] => d[(1, 2)]
d[(1, 2)] => d[((1, 2))] == d[(1, 2)]
There is a proposal, that
d[1, 2, a=3, b=4]
d[(1, 2), a=3, b=4]
be semantically equivalent.
Will adding keyword arguments break existing code? No, because they're
currently not allowed.
Python doesn't even allow you to unpack with *, so that won't break
existing code either.
[snip]
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