capi-sig March 2013

capi-sig@python.org

2 participants
7 discussions

ANN: expy 0.6.5 released!
by Yingjie Lan 16 Apr '22

16 Apr '22

EXPY is an express way to extend Python! EXPY provides a way to extend python in an elegant way. For more information and a tutorial, see: http://expy.sourceforge.net/ What's new: 1. Correct treatment of __init__ method. 2. Give warnings of missing Py_INCREF on appropriate special type methods. 3. Documentation update. Cheers, Yingjie

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ANNOUNCE: PyBindGen 0.8
by Gustavo Carneiro 10 Mar '22

10 Mar '22

The other day I released PyBindGen 0.8. Main news is that it features a new experimental header file scanner based on pygccxml (i.e., it's similar to py++ in scope, if not in maturity, but does not use boost.pythonunderneath). == What == PyBindGen is a Python module that is geared to generating C/C++ code that binds a C/C++ library for Python. It does so without extensive use of either C++ templates or C pre-processor macros. It has modular handling of C/C++ types, and can be easily extended with Python plugins. The generated code is almost as clean as what a human programmer would write, and does not depend on any library or header files besides Python itself. == Where == https://launchpad.net/pybindgen/ == NEWS == - Support C++ instance attributes through getter/setter methods - Support functions as methods of C++ classes - Support the PyObject* type - Support unsigned int, C strings (char*) (from Mark Lee) - Add basic support for enum types - New experimental automatic module generator based on C/C++ header file scanner and annotations in comments, using pygccxml - Some bug fixes -- Gustavo J. A. M. Carneiro INESC Porto, Telecommunications and Multimedia Unit "The universe is always one step beyond logic." -- Frank Herbert

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C API equivalent to abc.ABCMeta.register?
by Daniel Stutzbach 02 Mar '22

02 Mar '22

I'm the author of an extension module (blist) that provides a type that fits the MutableSequence API. Is there a canonical way for me to register the type as a MutableSequence from the C API? -- Daniel Stutzbach, Ph.D. President, Stutzbach Enterprises, LLC <http://stutzbachenterprises.com>

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Software Development - Application Development - Game Development
by Gary 10 Jan '22

10 Jan '22

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Re: [capi-sig] Import
by ecir hana 02 Mar '13

02 Mar '13

On Fri, Mar 1, 2013 at 6:15 PM, Dave Brotherstone <davegb(a)pobox.com> wrote: > > > I'm pretty sure this "just works", you put the name of the zip file in > sys.path, then it will internally open the zip (without extracting to a > temp location) and search for the relevant module - I don't know much > (read: anything) about Py_SetPath, but I'm assuming it's the same. > > Yes, it seems to work but apparently all the dynamic libraries cannot be inside the zip archive (why?). Here's what I have done: - first put all the files (*.py) from Python stdlib into a zip archive (I put them straight into archive, i.e. no parent directory, like: stdlib.zip/base64.py) - copy all the files from "lib-dynload" to the folder where you put that zip from previous line - Py_SetPath() to something line "parent/stdlib.zip:parent/lib-dynload". So basically it treats the zip file as a directory. Note, that it needs zlib in order to look inside the zip - it is in lib-dynload however - I'm just saying in case someone wouldn't all the dynamic libraries. Feel free to let me know if it works for you!

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Re: [capi-sig] Import
by Dave Brotherstone 01 Mar '13

01 Mar '13

On Fri, Mar 1, 2013 at 2:06 PM, ecir hana <ecir.hana(a)gmail.com> wrote: > On Thu, Feb 28, 2013 at 10:14 PM, Francis Bolduc < > francis.bolduc(a)cm-labs.com > > wrote: > > > > > The Python interpreter can read zip files. > > > > This is what I do myself. I zip the entire Python library and embed it > > inside my application. Then I extract it at run-time in a temporary > > directory, then I point the Python interpreter to it using Py_SetPath. > > > > I thought it would be possible to do without the extracting to a temporary > directory, i.e. doing it all in-memory... > > I'm pretty sure this "just works", you put the name of the zip file in sys.path, then it will internally open the zip (without extracting to a temp location) and search for the relevant module - I don't know much (read: anything) about Py_SetPath, but I'm assuming it's the same. Dave.

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Re: [capi-sig] Import
by ecir hana 01 Mar '13

01 Mar '13

On Thu, Feb 28, 2013 at 10:14 PM, Francis Bolduc <francis.bolduc(a)cm-labs.com > wrote: > > The Python interpreter can read zip files. > > This is what I do myself. I zip the entire Python library and embed it > inside my application. Then I extract it at run-time in a temporary > directory, then I point the Python interpreter to it using Py_SetPath. > I thought it would be possible to do without the extracting to a temporary directory, i.e. doing it all in-memory... > Not at all. > > Extending and embedding and distributing Python within an application > seems to be the most common use case. Once you know what to do, it is > actually very simple. But it is not covered in the documentation, nor > are there any examples. I only succeeded because I actually read the > CPython source code. > > Maybe, some day, somebody will feel generous and publish an example of > how to do that. Until then, this is the best place to ask questions. > Thank you!

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capi-sig March 2013