Terry Reedy wrote:
Ron Adam wrote:
Steven D'Aprano wrote:
Michael Foord wrote:
Don't we have a pretty-print API - and isn't it spelled __str__ ?
Not really. If it were as simple as calling str(obj), there would be
no need for the pprint module.
I agree. And when I want to use pprint, there are usually additional
output formatting requirements I need that isn't a "one size fits all"
type of problem.
I don't see how you can have a standard interface (like __pprint__), and
have additional, per-object formatting parameters. But that's beside the
point, I don't like __pprint__ in any event. Too special.
Like others, I am wary of over-expanding the list of special methods.
Perhap format strings could have a fourth conversion specifier, !p
(pretty) in addition to !s, !r, and !a.
What would format() do with "!p"? With "!s", it calls str(o), with "!r",
it calls repr(o). "!p" could call o.__pprint__(), but that's the special
method you're trying to avoid!
(I don't recall if I added "!a", and a machine that would know isn't
available to me just now.)
Eric.
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