Pyrex - Previous News

Version 0.9.5.1a

A glitch-fix nanorelease to correct a small problem with the setup.py file.

Version 0.9.5.1

A minor update to fix a few bugs introduced in 0.9.5.

Version 0.9.5

Selley's No More Warnings^TM!

Most of the C compiler warnings you used to get when compiling with distutils should be gone now.

Also a big pile of enhancements and bug fixes. See the CHANGES file for details.

Version 0.9.4.1

Tiny bugfix to correct a tab/space problem in the distutils extension.

Version 0.9.4

LValue Casting Is Dead: I have redesigned the code generator to eliminate the need for lvalue casting. This means that Pyrex-generated code should now be gcc4-compatible, although I haven't tested this. Let me know if you find any remaining lvalue casts; they should be fairly easy to fix now.

C++ Compilable

The generated code should now be compilable as either C or C++ without errors (although there may still be warnings). However, note that you can still only call C++ functions if they have been declared "extern C", even if you compile the Pyrex output as C++. I hope to introduce some C++ interface features soon.

And more...

A slew of other improvements and bug fixes have been made, see the CHANGES.

Version 0.9.3.1

This version kindly supplied by Giovanni Bajo incorporates patches to work around the following problems:

Compatibility with Python 2.4 Distutils

Compatibility with GCC 4 (lvalue cast problem)

WARNING: I have not reviewed these patches and have not fully tested this version. Use it at your own risk.

Version 0.9.3

Types defined with a ctypedef in a 'cdef extern from' block are now referred to by the typedef name in generated C code, so it is no longer necessary to match the type in the C header file exactly.
Some bugs introduced by the recent changes to the handling of string literals have been fixed.

See the CHANGES file for a full list of bug fixes and enhancements.

Version 0.8.2

Bug fixes:

Fixed the distutils extension, which I managed to break in 0.8.1.

Version 0.8.1

Bug fixes:

A bug in 0.8 causing names in external header files to be mangled has been fixed.
The distutils extension has been modified to stop it from trying to compile the generated C file if the Pyrex compiler reports errors.

Version 0.8

Major new facilities have been introduced for sharing declarations between Pyrex modules.

There is a backwards incompatible change in the way external extension types are declared.

Version 0.7.2

Bug fixes:

Fixed a problem caused by Python 2.3's new "True" and "False" boolean values (but I haven't tested the fix yet, since I don't have a 2.3 installation handy).
Function return values weren't always being automatically converted to/from Python objects when they should have.
Demos/callback was missing the cheesefinder.c file.

Version 0.7.1

New demo added:

Passing a Python function to a C function for use as a callback.

Bug fixes:

Some things which could crash the compiler.
Type errors in generated C code for special methods.
Incorrect optimization of parallel assignments.
Syntax error on extra comma after a non-parenthesized tuple constructor.
Syntax error on form feed on a line by itself.

Version 0.7

New features:

C attributes of extension types can be exposed directly to Python code.
C functions, types, etc. can have different internal and external names, making it easier to wrap them in Python objects having the expected names.
None is now a compile-time constant.
-I command-line options for specifing search paths for include files.
C arguments and variables declared as an extension type can take the value None.

Enhancements:

The source can contain form-feed characters.
Improved identification of functions in tracebacks

Version 0.6.1

Fixes broken distutils extension.

Version 0.6

New features:

Command line options for reporting version number, requesting a listing file and specifying the name of the generated C file. See USAGE.txt
An include statement for including other Pyrex files.
Improved facilities for exporting declarations from one Pyrex file to another. (Public declarations, public extension types)
Python syntax compatibility enhancements: try-except-else, multiple statements on one line.
A __delete__ special method for extension types.

There is one backward-incompatible change, a new syntax for C character literals.

Earlier Versions

Pyrex 0.4.5 has a public declaration for making C variables and functions available to external C code.

Pyrex 0.4.4 now produces tracebacks that show where an error occurred in Pyrex code.

Pyrex 0.4.3 introduces a new kind of for-loop for iterating over ranges of integers at C speed. See the Integer For-Loops section of the Language Overview.

Pyrex 0.4.2 allows any C function to propagate exceptions to its caller, using a new form of declaration. See Error Return Values in the Language Overview.

Pyrex 0.4 includes substantial new features for dealing with declarations in C header files and pre-existing Python types. See the new sections in the Language Overview on External Declarations and External Extension Types .

Graham Fawcett of the University of Windsor has contributed a distutils extension for compiling Pyrex modules, which is included with Pyrex.