[Boost-users] [Python]

Subject: [Boost-users] [Python]
From: Oliver Rudolph (oliver.rudolph_at_[hidden])
Date: 2010-02-15 06:18:56

Hi folks!

When trying to run Python-wrapped C++ code, I receive the following
message (this was a simple call to one of the c'tors of class TextFile):

Traceback (most recent call last):

  File "./FileTest.py", line 5, in <module>

    t_out = TextFile("sample.txt", "This is some sample text. It
says:\n\nHello world!")

Boost.Python.ArgumentError: Python argument types in

    TextFile.__init__(TextFile, str, str)

did not match C++ signature:

    __init__(_object*, std::string filename, dretchy::io::DeviceDataType
type, std::string content, dretchy::io::CompressionType zipper)

    __init__(_object*, std::string filename, dretchy::io::DeviceDataType
type, dretchy::io::CompressionType zipper)

    __init__(_object*, std::string filename, dretchy::io::DeviceDataType
type, std::string content)

    __init__(_object*, std::string filename, dretchy::io::DeviceDataType
type)
    __init__(_object*, std::string filename, std::string content,
dretchy::io::CompressionType zipper)
    __init__(_object*, std::string filename,
dretchy::io::CompressionType zipper)
    __init__(_object*, std::string filename, std::string content)
    __init__(_object*, std::string filename)

Strangely enough, this only happens when doing so on my openSuSE 11.0
machine. If I try the same thing on my Ubuntu 9.10 notebook, it works
perfectly. What could be the source of this problem?

The code is a bit lengthy, so I attached the non-compilable headers only.

Personally, I presume the error is rooted in the C-string / C++
std::string conversion. The Python wrapping itself was done via Py++,
the boost libs in use are of version 1.41.0.

Thanks a lot and
best regards,

Oliver