On Fri, 20 Aug 2010 15:09:39 +1200, Lawrence D'Oliveiro wrote: > In message <mailman.2242.1282071458.1673.python-l...@python.org>, Terry > Reedy wrote: > >> A reason not mentioned much is that some people have trouble following >> packed lines that are too much longer. Wide-page textbooks routinely >> put text in two columns for easier reading. > > But even 79 columns is too wide for them. So what?
I think you're wrong. I just opened a random text book at a random page, and the first line I counted had 84 columns of text. ("Data Structures and Program Design", 2nd Edition, by Robert L Kruse.) Of course source code is written in a monospaced typeface, which is a little wider and consequently fewer characters per page. The book uses right-justified comments, making it easy to count that the maximum line- width used for source code is 79 columns. Most lines are *much* shorter. Excluding comments, the longest line of code I spotted was 64 columns, with a typical line being more like 40 columns. -- Steven -- http://mail.python.org/mailman/listinfo/python-list