473,394 Members | 1,802 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,394 software developers and data experts.

problem with embbed boost.python in multi-interpreter andmulti-thread HELP please

I wrote a program embbed boost.python, each thread running a sub-interpreter, i made a module implement by boost.python, and i wish this module imported in each sub-interpreter, i find that the module could initialize only once, otherwise the boost.python will throw a exception said that something already registered; second conversion method ignored.

So I try another way, initialize and import the module in one interpreter such as the main interpreter, and I hope to import the module in any sub-interpreter, because I found the python document said:
"Extension modules are shared between (sub-)interpreters as follows: the first time a particular extension is imported, it is initialized normally, and a (shallow) copy of its module's dictionary is squirreled away. When the same extension is imported by another (sub-)interpreter, a new module is initialized and filled with the contents of this copy; the extension's init function is not called. "
but when i try this way i found that the program throw an exception:ImportError: No module named mym, (mym is the module name). This happens even i wrote the module in Python/C API without boost.python.

Could somebody tell me why this happened or how to deal with it, thanks for any suggestion.

Donnie Leen
Jul 18 '05 #1
1 2890
All right, I found the answer in boost.python test example embedding.cpp,
not to call initmodulename() in every sub-interpreter, just call
PyImport_AppendInittab("modulename", initmodulename) before call to
Py_Initialize(), this will add the module to the interpreter's builtin
modules, then I can call "import modulenmame" in each sub-interpeter.

Donnie Leen
Jul 18 '05 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

1
by: Bren | last post by:
Hi, Pardon my stupid, but I'm having a problem building Boost.Python as per the instructions at http://www.boost.org/libs/python/doc/building.html I got boost-build-2.0-m6.zip from...
0
by: Gouda Man | last post by:
I'm planning to write a large program that will have advanced scripting in python in which the scripter will subclass c++ objects to add functionality. this leads me to boost.python (if you dont...
0
by: Li Daobing | last post by:
I can't use .def(str(self)) I write a simple example, without `str', I can build it well, but with this one, I can't build //Rational.cpp #include <boost/python.hpp> #include <iostream> ...
5
by: maggie.nguyen | last post by:
Hi, I use Visual Studios 2005. In my project file, I include the library in linker: "Additional Library Directories: ..\..\boost\lib" I have these libs in the boost\lib directory: ...
11
by: Osiris | last post by:
I have these pieces of C-code (NOT C++ !!) I want to call from Python. I found Boost. I have MS Visual Studio 2005 with C++. is this the idea: I write the following C source file:...
0
by: Osiris | last post by:
My experiences with BOOST on Windows XP and Visual C++ 2005 I'm new to Python. I built software in more than ten other computer languages. I'm not sure if that is not a handicap, when reading...
4
by: Shawn McGrath | last post by:
Hi, I'm trying to expose a C++ class' internals to python via boost::python. I can do integer/boolean functions fine, but as soon as I do a string get/set it craps out. ...
6
by: Soren | last post by:
Hi! I'm trying to extend my python program with some C++ code. Right now I've spent hours just trying to get boost to work! I'm trying to get the example hello.cpp to work. Using Windows XP...
0
by: Ling | last post by:
I am using boost.python to wrap C++ function which includes directmusic libraries to simply play the midi, but lots of linkage errors "error LNK2001: unresolved external symbol". I wonder if it is...
0
by: devito | last post by:
hi there, for some days i try to build the boost.python tutorial "hello world" without bjam on winxp by using mingw. so i wrote a *.bat-file like the following: // --- snip...
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.