Protocol buffers and CentOS

[Eric]

Hello,
I have installed python (2.6.5) and GPB on CentOS (it's a VM not
sure if that's relevant) but am not able to run. In it's simplest
version I do:
python -c "import google.protobuf"

and get:

Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: No module named google.protobuf

I feel that either the gpb install did not work or I need to set an
env variable to point to some libraries.

thanks in advance,
Eric

[Jason Hsueh]

How did you install the python protobuf library, and what was the output?

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[Jason Hsueh]

(Adding the group back to the discussion)

pkg_resources should be part of setuptools, which should be installed as part of running the setup.py script. From the python README: 

2) If you do not have setuptools installed, note that it will be

   downloaded and installed automatically as soon as you run setup.py.

   If you would rather install it manually, you may do so by following

   the instructions on this page:

     http://peak.telecommunity.com/DevCenter/EasyInstall#installation-instructions

I'm not sure why this would have failed when doing the install - did you see any output related to setuptools?

On Wed, Apr 7, 2010 at 9:53 AM, Sherry Yang <yangc...@gmail.com> wrote:

Jason,
  Thanks - I did that and it helps and now I have a new error. Do you have any thoughts on this:

[jabber@jabberserver python]$ python -c "import google.protobuf"

Traceback (most recent call last):
  File "<string>", line 1, in <module>

  File "google/__init__.py", line 1, in <module>
    __import__('pkg_resources').declare_namespace(__name__)
ImportError: No module named pkg_resources


thanks again,
Eric

On Tue, Apr 6, 2010 at 4:40 PM, Jason Hsueh <jas...@google.com> wrote:

Eric -

Those commands install the C++ library - did you follow python/README.txt to install the python library?

Once you've done the below you should run:

python/ $ python setup.py test

python/ $ python setup.py install

(might need to sudo the last one)

That should install the modules into the correct locations so that you can import the protobuf library.

On Tue, Apr 6, 2010 at 4:27 PM, Sherry Yang <yangc...@gmail.com> wrote:

Hi Jason,
  Thanks for the followup. I did the standard:
./configure
make
make check
make install

and it seemed to run ok. I see a config.log file - is there anything I should look for there.

thanks again,
Eric

[Sherry Yang]

Jason,
  Thanks for the ideas. setuptools failed to install because zlib was not installed. I installed zlib and it still failed so I reinstalled python (after the zlib install) and everything works now.

thanks again!
Eric