Download and Install

You can always download the latest releases of RPyC from the project’s sourceforge page or its PyPI page. RPyC is distributed as a zip, a tar.gz, and a win32 installer. Of course you can also use easy_install rpyc and pip install rpyc just as well.

You may also wish to read the change log before installing new versions.

Platforms and Interpreters

RPyC is a pure-python library, and as such can run on any architecture and platform that runs python (or one of its other implementations), both 32- and 64-bit. This is also true for a client and its server, which may run on different architectures. The latest release supports:

  • Python (CPython) 2.4-2.7 as well as 3.0-3.2
  • Jython 2.5 and later
  • IronPython 2.7 and later

Cross-Interpreter Compatibility

Note that you cannot connect from a Python 2.x interpreter to a 3.x one, or vice versa. This is because Python 3 introduces major changes to the object model used by Python 2.x: some types were removed, added or unified into others. Byte- and Unicode- strings gave me a nightmare (and they still account for many bugs in the core interpreter). On top of that, many built-in modules and functions were renamed or removed, and many new language features were added. These changes render the two major versions of Python incompatible with one another, and sadly, this cannot be bridged automatically by RPyC at the serialization layer.

It’s not that I didn’t try – it’s just too hard a feat. It’s bascially like writing a 100% working 2to3 tool, alongside with a matching 3to2 one; and that, I reckon, is comparable to the halting problem (of course I might be wrong here, but it still doesn’t make it feasible).

Big words aside – you can connect a Python 2.x interpreter to a Python 2.y one, as long as you only use types/modules/features supported by both; and you can connect a Python 3.x interpreter to a Python 3.y one, under the same assumption, but you cannot connect a Python 2.x interpreter to a 3.y one. Trying to do so will results in all kinds of strange exceptions, so beware.


As a side note, do not try to mix different versions of RPyC (e.g., connecting a client machine running RPyC 3.1.0 to a server running RPyC 3.2.0). The wire-protocol has seen little changes since the release of RPyC 3.0, but the library itself has changed drastically. This might work, but don’t count on it.


Mailing List

Feel free to use our mailing list to ask questions and join the discussion, but please do not send bug reports to the mailing list. Please be sure to search the forum first, before asking questions. For bug reports, see below.


RPyC is developed on github, where you can always find the latest code or fork the project.

Bugs and Patches

We’re using github’s issue tracker for bug reports, feature requests, and overall status. When stumbling upon what seems to be a bug, you may consult with the mailing list, but be sure to open an issue as well.

Patches are accepted only through github’s pull requests mechanism, which provides a much more organized way to share patches: simply fork the project, commit your changes, and send a pull request. That way we can track, discuss, and integrate patches much more easily and concisely.


The core of RPyC has no external dependencies, so you can use it out of the box for “simple” use. However, RPyC integrates with some other projects to provide more features, and if you wish to use any of those, you must install them:

  • PyWin32 - Required for PipeStream on Windows

  • SSH client - Required for RPyC-over-SSH (ssh_connect)

  • Compatibiliy dependencies:

    • ssl-wrapper - Required for SSL support on python prior to v2.6 (ssl_connect)

    • TLSlite - Required for TLSlite support (VdbAuthenticator and tls_connect). The project is no longer maintained, but you can download v0.3.8 ported to newer versions of python.


      TLSLite has been deprecated as of v3.2.0, and can only be used with v3.1.0 and below.

    • zlib for IronPython - Required for IronPython prior to v2.7