[Python-checkins] python/dist/src/Doc/whatsnew whatsnew24.tex, 1.90, 1.91

akuchling at users.sourceforge.net akuchling at users.sourceforge.net
Tue Aug 31 13:26:33 CEST 2004


Update of /cvsroot/python/python/dist/src/Doc/whatsnew
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv2185

Modified Files:
	whatsnew24.tex 
Log Message:
Update versions and dates; add PEP 328

Index: whatsnew24.tex
===================================================================
RCS file: /cvsroot/python/python/dist/src/Doc/whatsnew/whatsnew24.tex,v
retrieving revision 1.90
retrieving revision 1.91
diff -u -d -r1.90 -r1.91
--- whatsnew24.tex	30 Aug 2004 15:03:23 -0000	1.90
+++ whatsnew24.tex	31 Aug 2004 11:26:23 -0000	1.91
@@ -21,15 +21,15 @@
 \maketitle
 \tableofcontents
 
-This article explains the new features in Python 2.4 alpha2, scheduled
-for release in late July 2004.  The final version of Python 2.4 is
-expected to be released around September 2004.
+This article explains the new features in Python 2.4 alpha3, scheduled
+for release in early September.  The final version of Python 2.4 is
+expected to be released around December 2004.
 
 Python 2.4 is a medium-sized release.  It doesn't introduce as many
 changes as the radical Python 2.2, but introduces more features than
 the conservative 2.3 release did.  The most significant new language
-feature (as of this writing) is the addition of generator expressions;
-most other changes are to the standard library.
+features (as of this writing) are function decorators and generator
+expressions; most other changes are to the standard library.
 
 This article doesn't attempt to provide a complete specification of
 every single new feature, but instead provides a convenient overview.
@@ -659,6 +659,42 @@
 
 
 %======================================================================
+\section{PEP 328: Multi-line Imports}
+
+One language change is a small syntactic tweak aimed at making it
+easier to import many names from a module.  In a
+\code{from \var{module} import \var{names}} statement, 
+\var{names} is a sequence of names separated by commas.  If the sequence is 
+very long, you can either write multiple imports from the same module,
+or you can use backslashes to escape the line endings:
+
+\begin{verbatim}
+from SimpleXMLRPCServer import SimpleXMLRPCServer,\
+            SimpleXMLRPCRequestHandler,\
+            CGIXMLRPCRequestHandler,\
+            resolve_dotted_attribute
+\end{verbatim}
+
+The syntactic change simply allows putting the names within
+parentheses.  Python ignores newlines within a parenthesized
+expression, so the backslashes are no longer needed:
+
+\begin{verbatim}
+from SimpleXMLRPCServer import (SimpleXMLRPCServer,
+            SimpleXMLRPCRequestHandler,
+            CGIXMLRPCRequestHandler,
+            resolve_dotted_attribute)
+\end{verbatim}
+
+The PEP also proposes that all \keyword{import} statements be
+absolute imports, with a leading \samp{.} character to indicate a
+relative import.  This part of the PEP is not yet implemented.
+
+\begin{seealso}
+\seepep{328}{Imports: Multi-Line and Absolute/Relative}{Written by Aahz.  Multi-line imports were implemented by Dima Dorfman.}
+
+
+%======================================================================
 \section{PEP 331: Locale-Independent Float/String Conversions}
 
 The \module{locale} modules lets Python software select various



More information about the Python-checkins mailing list