[issue24000] More fixes for the Clinic mapping of converters to format units

[Larry Hastings]

Larry Hastings added the comment:

> Doesn't always zeroes == length?

"zeroes" requires "length", but "length" does not require "zeroes".  As it happens all the format units supported by str always have both parameters either True or False.  But the Py_UNICODE converter accepts "length" for format units u# and Z#, and doesn't support "zeroes".

I want the converters to accept common parameters.  That will make comprehension easier for the casual reader.  So I want to keep "length" as a separate parameter, even for str.


> So I think the support of encoding=True should be removed
> from Argument Clinic soon.  [...]  I think we should get rid
> of [length] in future.

I disagree. My goal with Argument Clinic is that third-party developers will use it to write extensions.  And we don't know how many extension modules are using es, es#, et, et#, s#, y#, z#, u#, and U#.  I don't think we can remove any of this functionality until 4.0.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24000>
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