On 03/07/2020 21:55, Rob Cliffe wrote:
I don't like the .name syntax (grit on Tim's monitor; does not
suggest the meaning). Nor am I keen on "expressions" being
interpreted differently after 'case' than elsewhere in Python. But I
don't know what syntax (where necessary) to suggest.
I'm not keen on special treatment of the '_' variable, and would
prefer to be able to use 'else:' after 'match'.
+1
I think using else would be sensible since it has similar behaviour in
the rest of Python and it would immediately make sense to anyone seeing
the syntax for the first time (provided they understood what the rest of
the match block does).
If objections were moved against it I seem to have missed them (in my
defence, the discussion on PEP622 has been quite fragmented and I
haven't been on this list for very long).
I also don't like the .name syntax and for what little it's worth, I
personally would have a hard time getting used to it if it were adopted.
Has anyone proposed introducing ` ` quotes for this purpose? They could
enclose references without ambiguity and could even be used elsewhere in
Python to enclose identifiers, for example to allow spaces and symbols
in them (which I wouldn't regard as particularly good style, but it may
still come in handy). They are used in MySQL, bash and Markdown to
enclose expressions or identifiers, so I feel no experienced programmer
would have a hard time wrapping their head around it. Though I'd
understand if it were problematic for Python's parser.
Another option would be to wrap references in {} in a similar way to
what happens in fstrings.
Another option still could be to wrap references in quotes, like
strings, and require use of str("some string") to catch literal strings,
but I don't know if I like this myself.
Either way, I seem to prefer symmetric marks to signal references; I
don't know if anyone else shares this sentiment.
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