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author | Andrew M. Kuchling <amk@amk.ca> | 2006-07-17 16:47:54 (GMT) |
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committer | Andrew M. Kuchling <amk@amk.ca> | 2006-07-17 16:47:54 (GMT) |
commit | 7a752e7ad46eb50b9016f0a3182c1a5fd84ba047 (patch) | |
tree | 270449e5eddff48d61325dd1eb6936b6716dcbeb /Doc/whatsnew | |
parent | c5e3d8a8d63d540f530a687ccaf397c9012ee3c0 (diff) | |
download | cpython-7a752e7ad46eb50b9016f0a3182c1a5fd84ba047.zip cpython-7a752e7ad46eb50b9016f0a3182c1a5fd84ba047.tar.gz cpython-7a752e7ad46eb50b9016f0a3182c1a5fd84ba047.tar.bz2 |
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Diffstat (limited to 'Doc/whatsnew')
-rw-r--r-- | Doc/whatsnew/whatsnew25.tex | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/Doc/whatsnew/whatsnew25.tex b/Doc/whatsnew/whatsnew25.tex index b8f808c..7eb9e92 100644 --- a/Doc/whatsnew/whatsnew25.tex +++ b/Doc/whatsnew/whatsnew25.tex @@ -74,7 +74,7 @@ but there was no syntax that was preferred by a clear majority. Candidates included C's \code{cond ? true_v : false_v}, \code{if cond then true_v else false_v}, and 16 other variations. -GvR eventually chose a surprising syntax: +Guido van~Rossum eventually chose a surprising syntax: \begin{verbatim} x = true_value if condition else false_value @@ -407,7 +407,7 @@ specific exceptions. You couldn't combine both \keyword{except} blocks and a combined version was complicated and it wasn't clear what the semantics of the combined should be. -GvR spent some time working with Java, which does support the +Guido van~Rossum spent some time working with Java, which does support the equivalent of combining \keyword{except} blocks and a \keyword{finally} block, and this clarified what the statement should mean. In Python 2.5, you can now write: @@ -600,7 +600,11 @@ once the generator has been exhausted. \seepep{342}{Coroutines via Enhanced Generators}{PEP written by Guido van~Rossum and Phillip J. Eby; implemented by Phillip J. Eby. Includes examples of -some fancier uses of generators as coroutines.} +some fancier uses of generators as coroutines. + +Earlier versions of these features were proposed in +\pep{288} by Raymond Hettinger and \pep{325} by Samuele Pedroni. +} \seeurl{http://en.wikipedia.org/wiki/Coroutine}{The Wikipedia entry for coroutines.} @@ -1152,8 +1156,8 @@ print max(L) false values. \function{any()} returns \constant{True} if any value returned by the iterator is true; otherwise it will return \constant{False}. \function{all()} returns \constant{True} only if -all of the values returned by the iterator evaluate as being true. -(Suggested by GvR, and implemented by Raymond Hettinger.) +all of the values returned by the iterator evaluate as true. +(Suggested by Guido van~Rossum, and implemented by Raymond Hettinger.) \item ASCII is now the default encoding for modules. It's now a syntax error if a module contains string literals with 8-bit @@ -1259,7 +1263,8 @@ Python's allocator functions instead of the system's \item The code generator's peephole optimizer now performs simple constant folding in expressions. If you write something like \code{a = 2+3}, the code generator will do the arithmetic and produce -code corresponding to \code{a = 5}. +code corresponding to \code{a = 5}. (Proposed and implemented +by Raymond Hettinger.) \item Function calls are now faster because code objects now keep the most recently finished frame (a ``zombie frame'') in an internal @@ -1353,10 +1358,13 @@ defaultdict(<type 'list'>, {'c': ['cammin', 'che'], 'e': ['era'], 'r': ['ritrovai'], 'u': ['una'], 'v': ['vita', 'via']} \end{verbatim} -The \class{deque} double-ended queue type supplied by the +(Contributed by Guido van~Rossum.) + +\item The \class{deque} double-ended queue type supplied by the \module{collections} module now has a \method{remove(\var{value})} method that removes the first occurrence of \var{value} in the queue, raising \exception{ValueError} if the value isn't found. +(Contributed by Raymond Hettinger.) \item New module: The \module{contextlib} module contains helper functions for use with the new '\keyword{with}' statement. See @@ -2197,6 +2205,11 @@ Changes to Python's build process and to the C API include: \begin{itemize} +\item The Python source tree was converted from CVS to Subversion, +in a complex migration procedure that was supervised and flawlessly +carried out by Martin von~L\"owis. The procedure was developed as +\pep{347}. + \item The largest change to the C API came from \pep{353}, which modifies the interpreter to use a \ctype{Py_ssize_t} type definition instead of \ctype{int}. See the earlier @@ -2417,8 +2430,9 @@ freed with the corresponding family's \cfunction{*_Free()} function. The author would like to thank the following people for offering suggestions, corrections and assistance with various drafts of this -article: Nick Coghlan, Phillip J. Eby, Ralf W. Grosse-Kunstleve, Kent -Johnson, Martin von~L\"owis, Fredrik Lundh, Gustavo Niemeyer, James -Pryor, Mike Rovner, Scott Weikart, Barry Warsaw, Thomas Wouters. +article: Nick Coghlan, Phillip J. Eby, Raymond Hettinger, Ralf +W. Grosse-Kunstleve, Kent Johnson, Martin von~L\"owis, Fredrik Lundh, +Gustavo Niemeyer, James Pryor, Mike Rovner, Scott Weikart, Barry +Warsaw, Thomas Wouters. \end{document} |