str.isnumeric and Cuneiforms

[Marco]

Is it normal the str.isnumeric() returns False for these Cuneiforms?

'\U00012456'
'\U00012457'
'\U00012432'
'\U00012433'

They are all in the Nl category.

Marco

 

[Steven D'Aprano]

Is it normal the str.isnumeric() returns False for these Cuneiforms?

'\U00012456'
'\U00012457'
'\U00012432'
'\U00012433'

They are all in the Nl category.

Are you sure about that? Do you have a reference?

It seems to me that they are not:


py> c = '\U00012456'
py> import unicodedata
py> unicodedata.numeric(c)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: not a numeric character


Although it is possible that unicodedata is buggy, or perhaps just
doesn't support the multilingual plane characters.

 

[jmfauth]

Is it normal the str.isnumeric() returns False for these Cuneiforms?

'\U00012456'
'\U00012457'
'\U00012432'
'\U00012433'

They are all in the Nl category.

Indeed there are, but Unicode (ver. 5.0.0) does not assign numeric
values to these code points.

Do not ask me, why?

jmf

 

[Marco Buttu]

Are you sure about that? Do you have a reference?

I I was just playing with Unicode on Python 3.3a:

from unicodedata import category, name
from sys import maxunicode
nl = [chr(c) for c in range(maxunicode + 1) \

.... if category(chr(c)).startswith('Nl')]

numerics = [chr(c) for c in range(maxunicode + 1) \

.... if chr(c).isnumeric()]
.... print(hex(ord(c)), category(c), unicodedata.name(c))
....
0x12432 Nl CUNEIFORM NUMERIC SIGN SHAR2 TIMES GAL PLUS DISH
0x12433 Nl CUNEIFORM NUMERIC SIGN SHAR2 TIMES GAL PLUS MIN
0x12456 Nl CUNEIFORM NUMERIC SIGN NIGIDAMIN
0x12457 Nl CUNEIFORM NUMERIC SIGN NIGIDAESH

So they are in the Nl category but are not "numerics", and that sounds
strange because other Cuneiforms are "numerics":
(True, False)

It seems to me that they are not:


py> c = '\U00012456'
py> import unicodedata
py> unicodedata.numeric(c)
Traceback (most recent call last):
File "<stdin>", line 1, in<module>
ValueError: not a numeric character

Exactly, as I wrote above, is that right?

 

[Marco Buttu]

Indeed there are, but Unicode (ver. 5.0.0) does not assign numeric
values to these code points.

help(unicodedata) says Python 3.3a refers to Unicode 6.0.0

 

[Marco Buttu]

Is it normal the str.isnumeric() returns False for these Cuneiforms?

'\U00012456'
'\U00012457'
'\U00012432'
'\U00012433'

They are all in the Nl category.

Marco

It's ok, I found that they don't have a number assigned in the
ftp://ftp.unicode.org/Public/UNIDATA/UnicodeData.txt database.

 

[jmfauth]

It's ok, I found that they don't have a number assigned in theftp://ftp.unicode.org/Public/UNIDATA/UnicodeData.txtdatabase.

Good. I was about to send this information. I have all this (not
updated)
stuff locally on my hd.

 

[jmfauth]

It's ok, I found that they don't have a number assigned in theftp://ftp.unicode.org/Public/UNIDATA/UnicodeData.txtdatabase.

Non official but really practical:

http://www.fileformat.info/info/unicode/index.htm

 

[Marco Buttu]

Non official but really practical:

http://www.fileformat.info/info/unicode/index.htm

Very well ordered, thanks