py-graph-tool does not work after installation

[thomas.faure@…]

after installing graph_tool on my Mac OSX 10.11.6 via macport (sudo port install py-graph-tool),

I got an error when I tried to execute from graph_tool.all import *

Traceback (most recent call last):
  File "graph.py", line 1, in <module>
    from graph_tool.all import *
  File "/usr/local/lib/python2.7/site-packages/graph_tool/__init__.py", line 106, in <module>
  File "/usr/local/lib/python2.7/site-packages/graph_tool/dl_import.py", line 57, in dl_import
  File "<string>", line 1, in <module>
ImportError: cannot import name libgraph_tool_core

Python 2.7.10

[mf2k (Frank Schima)]

The Priority field is for use by Macports team members only.

[mf2k (Frank Schima)]

In the future, please use WikiFormatting and Cc the port maintainers (port info --maintainers py-graph-tool), if any.

[mamoll (Mark Moll)]

What is the output of port contents py35-graph-tool |grep libgraph_tool_core ? I have py35-graph-tool installed and the command you mention works for me.

Normally, MacPorts installs in the /opt/local/ prefix. Did you change this to /usr/local/? If not, then you have some other incompatible version of py-graph-tool installed in /usr/local. Either uninstall that version or change your PYTHONPATH.

[thomas.faure@…]

port contents py35-graph-tool gives Port py35-graph-tool is not installed.

[mamoll (Mark Moll)]

Sorry, I meant: port contents py27-graph-tool |grep libgraph_tool_core

[thomas.faure@…]

/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/graph_tool/libgraph_tool_core.0.so

/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/graph_tool/libgraph_tool_core.so

[mamoll (Mark Moll)]

Yes, so the real problem is that you have another version of graph-tool installed in /usr/local.

[thomas.faure@…]

So, what am I suppose to do ?

[mamoll (Mark Moll)]

Either uninstall that version or change your PYTHONPATH.