Best way to inplace alter a list going into postgres

[Ben Finney]

Sayth Renshaw <flebber.crue at gmail.com> writes:

> What is the best way to inplace alter a list going into a postgres
> database using split but being sure that the order of items remains
> correct.

That's a trick question. The best way to modify fields of a record is
not with a list.

Instead, you should get the record in the form of a mapping (such as
Python's built-in mapping type, ‘dict’) and alter the fields *by name*.

Ony when it's time to serialise the data should you then convert it to a
list, extracting by the sequence of field names (‘horseattrs’ in your
example).

-- 
 \       “Firmness in decision is often merely a form of stupidity. It |
  `\        indicates an inability to think the same thing out twice.” |
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Ben Finney