ImportError when importing igraph

Can you please check whether you have a file named /usr/local/lib/libigraph.dylib on your machine? Also, can you try importing igraph from the "default" Python (/usr/bin/python) and not the one that comes with EPD?

Thank you for the immediate reply.
Answer 1) The file is called /usr/local/lib/libigraph.0.dylib on my machine not /usr/local/lib/libigraph.dylib
Answer 2) It is no problem with the default Python, but it still is with the Enthought distribution.

Okay. I presume that you have used the Mac OS X installer for igraph that is published on the Python Package Index. This installer is designed for the "default" Python on Mac OS X and has not been tested with EPD. For me it seems like EPD is not able to find _igraph_eit_destroy, which is a symbol that comes from /usr/local/lib/libigraph.0.dylib.

I have a few ideas here but I cannot test them as I don't have EPD on my machine. Basically they all boil down to "telling" EPD to look for lbiigraph.0.dylib in /usr/local/lib. I'll download EPD and get back to you when I figured it out.

Can you please run the following command?

file /usr/local/lib/libigraph.0.dylib

Thank you!

Done.
Prints the following output on my screen:

client-75-102-84-229:bin timosmieszek$ file /usr/local/lib/libigraph.0.dylib
/usr/local/lib/libigraph.0.dylib: Mach-O universal binary with 2 architectures
/usr/local/lib/libigraph.0.dylib (for architecture x86_64): Mach-O 64-bit dynamically linked shared library x86_64
/usr/local/lib/libigraph.0.dylib (for architecture i386): Mach-O dynamically linked shared library i386

Okay, that's great. My worry was that libigraph.0.dylib was somehow built for 64-bit architectures only, but apparently this is not the case here. Can you also send me the output of the following commands:

file /Library/Python/2.7/site-packages/igraph/_igraph.so
otool -L /Library/Python/2.7/site-packages/igraph/_igraph.so

file /Library/Python/2.7/site-packages/igraph/_igraph.so

/Library/Python/2.7/site-packages/igraph/_igraph.so: Mach-O universal binary with 2 architectures
/Library/Python/2.7/site-packages/igraph/_igraph.so (for architecture i386): Mach-O bundle i386
/Library/Python/2.7/site-packages/igraph/_igraph.so (for architecture x86_64): Mach-O 64-bit bundle x86_64

otool -L /Library/Python/2.7/site-packages/igraph/_igraph.so

/Library/Python/2.7/site-packages/igraph/_igraph.so:
 /Users/ntamas/lib/libigraph.0.dylib (compatibility version 1.0.0, current version 1.0.0)
 /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 159.1.0)

Damn. Thanks for the heads up. Note that _igraph.so tries to load libigraph.0.dylib from /Users/ntamas/lib, which is a folder on _my_ machine. I will post an updated installer on PyPI soon.

In the meanwhile, you could try modifying the dependent library path in _igraph.so as follows:

install_name_tool -change /Users/ntamas/lib/libigraph.0.dylib /usr/local/lib/libigraph.0.dylib /Library/Python/2.7/site-packages/igraph/_igraph.so

Not sure if this will work, though.

Such things happen ;-)
Pls. keep me posted when the updated version is available...

no, it didn't

The issue is now resolved and the fixed installers are uploaded to PyPI. Thanks for the quick feedback!