On Sun, Sep 23, 2012 at 4:24 PM, Joshua Landau
<joshua.landau...@gmail.com> wrote:
> The docs describe identifiers to have this grammar:
>
> identifier ::= xid_start xid_continue*
> id_start ::= <all characters in general categories Lu, Ll, Lt, Lm, Lo,
> Nl, the underscore, and characters with the Other_ID_Start property>
> id_continue ::= <all characters in id_start, plus characters in the
> categories Mn, Mc, Nd, Pc and others with the Other_ID_Continue property>
> xid_start ::= <all characters in id_start whose NFKC normalization is in
> "id_start xid_continue*">
> xid_continue ::= <all characters in id_continue whose NFKC normalization is
> in "id_continue*">
>
> So I would assume that
> exec("a{} = None".format(char))
> would be valid if
> unicodedata.normalize("NFKC", char) == "1"
> as
> exec("a1 = None")
> is valid.
>
> BUT "a¹ = None" is not valid*.
>
> *a<superscript 1>, accessible through <ALT-GR>+1 if your keyboard's set up
> to do that stuff.
>
> Thank you for your times.
Or if you don't have a keyboard for that, you can do the same thing via:
exec("x\u00b9 = None") # U+00B9 is superscript 1
On the other hand, this does work:
exec("x\u2071 = None") # U+2071 is superscript i
So it seems to be only an issue with superscript and subscript digits.
Looks like a compiler bug to me.
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