Terry J. Reedy <tjre...@udel.edu> added the comment:
I checked a bit. All the 'index' entries in the index are about sequences.
However, https://docs.python.org/3/reference/datamodel.html has this abstract
(non-Python) description:
"Mappings
These represent finite sets of objects indexed by arbitrary index sets. The
subscript notation a[k] selects the item indexed by k from the mapping a; ...
Dictionaries
These represent finite sets of objects indexed by nearly arbitrary
values."
I personally would prefer 'keyed' or 'subscripted' and 'key'to prevent
confusion. The entry then switches to the usual Python term 'key'.
"The only types of values not acceptable as keys ... a key’s hash value ...
used for keys ..."
https://docs.python.org/3/library/stdtypes.html#mapping-types-dict uses 'index'
once as a verb, otherwise uses 'key'.
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<https://bugs.python.org/issue35077>
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