[Numpy-discussion] [ANN] Cython 0.15
Paul Anton Letnes
Sun Aug 7 15:31:27 CDT 2011
Looks like you have done some great work! I've been using f2py in the past, but I always liked the idea of cython - gradually wrapping more and more code as the need arises. I read somewhere that fortran wrapping with cython was coming - dare I ask what the status on this is? Is it a goal for cython to support easy fortran wrapping at all?
Keep up the good work!
On 6. aug. 2011, at 11.18, Dag Sverre Seljebotn wrote:
> We are excited to announce the release of Cython 0.15, which is a huge
> step forward in achieving full Python language coverage as well as
> many new features, optimizations, and bugfixes.
> Download: http://cython.org/ or http://pypi.python.org/pypi/Cython
> == Major Features ==
> * Generators (yield) - Cython has full support for generators,
> generator expressions and coroutines.
> * The nonlocal keyword is supported.
> * Re-acquiring the gil: with gil - works as expected within a nogil
> * OpenMP support:
> * Control flow analysis prunes dead code and emits warnings and
> errors about uninitialised variables.
> * Debugger command cy set to assign values of expressions to Cython
> variables and cy exec counterpart cy_eval().
> * Exception chaining http://www.python.org/dev/peps/pep-3134/
> * Relative imports http://www.python.org/dev/peps/pep-0328/
> * The with statement has its own dedicated and faster C
> * Improved pure syntax including cython.cclass, cython.cfunc, and
> cython.ccall. http://docs.cython.org/0.15/src/tutorial/pure.html
> * Support for del.
> * Boundschecking directives implemented for builtin Python sequence
> * Several updates and additions to the shipped standard library pxd
> files https://github.com/cython/cython/tree/master/Cython/Includes
> * Forward declaration of types is no longer required for circular
> Note: this will be the last release to support Python 2.3; Python 2.4
> will be supported for at least one more release.
> == General improvements and bug fixes ==
> This release contains over a thousand commits including hundreds of
> bugfixes and optimizations. The bug tracker has not been as heavily
> used this release cycle, but is still useful
> == Incompatible changes ==
> * Uninitialized variables are no longer initialized to None and
> accessing them has the same semantics as standard Python.
> * globals() now returns a read-only dict of the Cython module's
> globals, rather than the globals
> of the first non-Cython module in the stack
> * Many C++ exceptions are now special cases to give closer Python
> counterparts. This means that except+ functions that formally raised
> generic RuntimeErrors may raise something else such as
> == Known regressions ==
> * The inlined generator expressions (introduced in Cython 0.13) were
> disabled in favour of full generator expression support. This induces
> a performance regression for cases that were previously inlined.
> == Contributors ==
> Many thanks to:
> Francesc Alted,
> Haoyu Bai,
> Stefan Behnel,
> Robert Bradshaw,
> Lars Buitinck,
> Lisandro Dalcin,
> John Ehresman,
> Mark Florisson,
> Christoph Gohlke,
> Jason Grout,
> Chris Lasher,
> Vitja Makarov,
> Brent Pedersen,
> Dag Sverre Seljebotn,
> Nathaniel Smith,
> and Pauli Virtanen
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