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Explain popitem() 

Add Unixware 7 port
Ready for RC1
Minor rewrites
This commit is contained in:
Andrew M. Kuchling 2001-04-12 03:37:19 +00:00
parent c993272786
commit db7657d4e0
1 changed files with 16 additions and 13 deletions
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Doc/whatsnew/whatsnew21.tex
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@ -5,7 +5,7 @@
% $Id$
\title{What's New in Python 2.1}
\release{0.07}
\release{0.99}
\author{A.M. Kuchling}
\authoraddress{\email{amk1@bigfoot.com}}
\begin{document}
@ -13,12 +13,13 @@
\section{Introduction}
{\large This document is a draft, and is subject to change until
the final version of Python 2.1 is released. Currently it is up to date
for Python 2.1 beta 2. Please send any comments, bug reports, or
questions, no matter how minor, to \email{amk1@bigfoot.com}. }
{\large This document is a draft, and is subject to change until the
final version of Python 2.1 is released. Currently it is up to date
for Python 2.1 release candidate~1. Please send any comments, bug
reports, or questions, no matter how minor, to
\email{amk1@bigfoot.com}. }
It's that time again... time for a new Python release, version 2.1.
It's that time again... time for a new Python release, Python 2.1.
One recent goal of the Python development team has been to accelerate
the pace of new releases, with a new release coming every 6 to 9
months. 2.1 is the first release to come out at this faster pace, with
@ -36,8 +37,7 @@ provides an overview of the new features for Python programmers.
Refer to the Python 2.1 documentation, or to the specific PEP, for
more details about any new feature that particularly interests you.
Currently 2.1 is available in a beta release, and the final release is
planned for April 2001.
The final release of Python 2.1 is planned for April 2001.
%======================================================================
\section{PEP 227: Nested Scopes}
@ -795,14 +795,16 @@ for line in sys.stdin.xreadlines():
\end{verbatim}
For a fuller discussion of the line I/O changes, see the python-dev
summary for January 1-15, 2001.
summary for January 1-15, 2001 at
\url{http://www.amk.ca/python/dev/2001-01-1.html}.
\item A new method, \method{popitem()}, was added to dictionaries to
enable destructively iterating through the contents of a dictionary;
this can be faster for large dictionaries because XXX.
this can be faster for large dictionaries because there's no need to
construct a list containing all the keys or values.
\code{D.popitem()} removes a random \code{(\var{key}, \var{value})}
pair from the dictionary and returns it as a 2-tuple. This was
implemented mostly by Tim Peters and Guido van Rossum, after a
pair from the dictionary~\code{D} and returns it as a 2-tuple. This
was implemented mostly by Tim Peters and Guido van Rossum, after a
suggestion and preliminary patch by Moshe Zadka.
\item Modules can now control which names are imported when \code{from
@ -844,7 +846,8 @@ code.
340K thanks to Fredrik Lundh.
\item Some new ports were contributed: MacOS X (by Steven Majewski),
Cygwin (by Jason Tishler); RISCOS (by Dietmar Schwertberger).
Cygwin (by Jason Tishler); RISCOS (by Dietmar Schwertberger); Unixware~7
(by Billy G. Allie).
\end{itemize}