# Developing with C++ but not python **URL:** \ **Category:** GNU Radio\ **Created:** [February 25, 2013, 2:27pm UTC](https://www.ruby-forum.com/t/developing-with-c-but-not-python/226909 "2013-02-25T14:27:34Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Gong\_Z](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/d07c76/32.png) [@Gong\_Z](https://www.ruby-forum.com/u/Gong_Z)\ **Post date:** [February 25, 2013, 2:27pm UTC](https://www.ruby-forum.com/t/developing-with-c-but-not-python/226909/1 "2013-02-25T14:27:34Z")
Hi, I think python file means data go downstream without interacting with other data stream.And I have seen several example writen in c++ and they all contain a gr\_top\_block which makes them similar to python files.Any body have the experience developing in c++?And what you think is the major difficulity(except more effort) compared to python? Thanks. ---
**Author:** ![Gong\_Z](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/d07c76/32.png) [@Gong\_Z](https://www.ruby-forum.com/u/Gong_Z)\ **Post date:** [February 25, 2013, 2:51pm UTC](https://www.ruby-forum.com/t/developing-with-c-but-not-python/226909/2 "2013-02-25T14:51:32Z")
> Hi, > I think python file means data go downstream without interacting > with other data stream.And I have seen several example writen in c++ and > they all contain a gr\_top\_block which makes them similar to python > files.Any body have the experience developing in c++?And what you think > is the major difficulity(except more effort) compared to python? > Thanks. Hi, I am not completely sure I understood your question, but as far as I can tell you are concerned about running python next to C++ (I guess for performance reasons.) The core GNURadio application, also the top\_blocks are C++ code, so all the data processing and data passing is done in compiled C++ code (Unless you decide to write blocks in python of course). Python is only used for setup and connection purposes and use automatically generated wrappers for the C++ code (so you call shared C++ libraries from python). See also these two FAQs [http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#Why-bother-with-Python-I-just-want-to-code-in-C](http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#Why-bother-with-Python-I-just-want-to-code-in-C) Martin ---
**Author:** ![Gong\_Z](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/d07c76/32.png) [@Gong\_Z](https://www.ruby-forum.com/u/Gong_Z)\ **Post date:** [February 25, 2013, 2:53pm UTC](https://www.ruby-forum.com/t/developing-with-c-but-not-python/226909/3 "2013-02-25T14:53:18Z")
On Mon, Feb 25, 2013 at 09:26:22PM +0800, Gong Z. wrote: > Hi, > I think python file means data go downstream without interacting > with other data stream.And I have seen several example writen in c++ > and they all contain a gr\_top\_block which makes them similar to > python files.Any body have the experience developing in c++?And what > you think is the major difficulity(except more effort) compared to > python? Yep, that’s the major difference. Also, don’t forget that there are some blocks only available in Python. MB – Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin B. Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT – University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association