Steven D'Aprano wrote: > On Thu, 29 Mar 2012 17:36:34 +0000, Prasad, Ramit wrote: > >>>> Technically, ASCII goes up to 256 but they are not A-z letters. >>>> >>> Technically, ASCII is 7-bit, so it goes up to 127. >> >>> No, ASCII only defines 0-127. Values >=128 are not ASCII. >>> >>> >From https://en.wikipedia.org/wiki/ASCII: >>> >>> ASCII includes definitions for 128 characters: 33 are non-printing >>> control characters (now mostly obsolete) that affect how text and >>> space is processed and 95 printable characters, including the space >>> (which is considered an invisible graphic). >> >> >> Doh! I was mistaking extended ASCII for ASCII. Thanks for the >> correction. > > There actually is no such thing as "extended ASCII" -- there is a whole > series of many different "extended ASCIIs". If you look at the encodings > available in (for example) Thunderbird, many of the ISO-8859-* and > Windows-* encodings are "extended ASCII" in the sense that they extend > ASCII to include bytes 128-255. Unfortunately they all extend ASCII in a > different way (hence they are different encodings).
Yupp. Looking at RFC 1345 some years ago (while having to deal with EBCDIC) made this all pretty clear to me. I appreciate that someone did this heavy work of collecting historical encodings. Ciao, Michael. -- http://mail.python.org/mailman/listinfo/python-list
