Marc-Andre Lemburg <m...@egenix.com> added the comment: Alexander Belopolsky wrote: > > Alexander Belopolsky <belopol...@users.sourceforge.net> added the comment: > > Should we also review the documentation for fractions and decimals? For > example, fractions are documented as accepting "strings of decimal digits", > but given that we have presumably non-identical str.isdigit() and > str.isdecimal() methods, the above definition begs a question whether > accepted strings should be digits, decimals or both?
The term "decimal digit" is defined in the Unicode standard as those code points having the category "Ld". See http://www.unicode.org/versions/Unicode5.2.0/ch04.pdf The methods .isdecimal(), .isdigit() and .isnumeric() check the availability the resp. field entries 6, 7 and 8 in the UCD See http://www.unicode.org/reports/tr44/#Numeric_Type for details and http://www.unicode.org/Public/6.0.0/ucd/extracted/DerivedNumericType.txt for the full list of code points with these fields set. The docs for those methods need to be updated as well. Doing this for .isdigit() and .isnumeric() is a bit difficult, though, since the code points don't fall into just a single category. The best option is to refer to the code point properties Numeric_Type=Decimal for .isdecimal(), Numeric_Type=Digit for .isdigit() and Numeric_Type=Numeric for .isnumeric(). The resp. numeric values are available via the unicodedata module. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue10610> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
