Closed
Description
Should match dictionary mapping semantics, such that
{1, 2, 3} = some_set
matches if {1, 2, 3} <= some_set, rather than {1, 2, 3} == some_set, with explicit syntax in the form of
{1, 2, 3, *()} = some_set
for checking {1, 2, 3} == some_set.
Note that this would be a breaking change, as was the previous change to dict matching.