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This is the command I am trying to run and its output:

$ python2 Python 2.7.8 (default, Sep 24 2014, 18:26:21) [GCC 4.9.1 20140903 (prerelease)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import gi Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python2.7/site-packages/gi/__init__.py", line 42, in <module> from . import _gi ImportError: /usr/lib/python2.7/site-packages/gi/_gi.so: undefined symbol: g_type_check_instance_is_fundamentally_a

I have searched for this error, but could not find anything that helped.

These are the packages that I have installed:

$ pacman -Qs python local/pygtk 2.24.0-3 Python bindings for the GTK widget set local/python 3.3.4-1 Next generation of the python high-level scripting language local/python-dbus-common 1.2.0-2 Common dbus-python files shared between python-dbus and python2-dbus local/python-gobject 3.14.0-2 Python 3 bindings for GObject local/python-gobject2 2.28.6-11 Python 3 bindings for GObject2 local/python2 2.7.8-2 A high-level scripting language local/python2-cairo 1.10.0-1 Python2 bindings for the cairo graphics library local/python2-dbus 1.2.0-2 Python 2.7 bindings for DBUS local/python2-distutils-extra 2.38-1 Enhancements to the Python build system local/python2-gobject 3.14.0-2 Python 2 bindings for GObject local/python2-gobject2 2.28.6-11 Python 2 bindings for GObject2 local/python2-pillow 2.3.0-3 Python Imaging Library (PIL) fork. Python2 version. local/python2-xdg 0.25-1 Python library to access freedesktop.org standards

Dont know what I am missing here..

Solved:

Error was due to older version of glib2 package.

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This might be not a Python problem nor your code problem. /usr/lib/python2.7/site-packages/gi/_gi.so might be corrupted or compiled badly. Maybe you've put it in the wrong path.

How to solve: upgrade glib2

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5 Comments

@AadityaBagga You might need to uninstall the package '_gi.so' belongs to and reinstall it from official site or using pip; if this doesn't work, download the source and compile it yourself.
The package was python2-gobject, and I had just installed it, so not sure reinstalling will make any difference..
@AadityaBagga 'Undefined symbol' is about your system, not Python. python2-gobject might depend on some package which is not installed.
The dependencies of python2-gobject are installed, as the package manager automatically resolves dependencies.. Perhaps there is an unlisted dependency?
Figured it out: upgrading the glib2 package fixed it ;) Thx for the pointers, marking it as solved; you might want to edit your post to include it.

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