Failure to install python-igraph on mac high sierra

[454400098]

Hi i've tried brew install cairo brew install py2cairo brew install igraph on my mac, and after I run the follow command sudo pip install python-igraph.
I have the following warning on terminal which I cannot solove:
`nbp-242-109:data-processing zhenghaodong$ sudo pip install python-igraph
Password:
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7.
The directory '/Users/zhenghaodong/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/zhenghaodong/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting python-igraph
Downloading https://files.pythonhosted.org/packages/0f/a0/4e7134f803737aa6eebb4e5250565ace0e2599659e22be7f7eba520ff017/python-igraph-0.7.1.post6.tar.gz (377kB)
100% |████████████████████████████████| 378kB 8.7MB/s
Installing collected packages: python-igraph
Running setup.py install for python-igraph ... error
Complete output from command /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -u -c "import setuptools, tokenize;file='/private/tmp/pip-install-o5d5mk/python-igraph/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record /private/tmp/pip-record-h5QEiH/install-record.txt --single-version-externally-managed --compile:
running install
running build
running build_py
creating build
creating build/lib.macosx-10.6-intel-2.7
creating build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/configuration.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/clustering.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/compat.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/formula.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/layout.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/cut.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/init.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/matching.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/summary.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/datatypes.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/utils.py -> build/lib.macosx-10.6-intel-2.7/igraph
copying igraph/statistics.py -> build/lib.macosx-10.6-intel-2.7/igraph
creating build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/structural.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/colortests.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/attributes.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/rng.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/conversion.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/vertexseq.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/init.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/flow.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/games.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/matching.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/generators.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/isomorphism.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/basic.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/utils.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/edgeseq.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/decomposition.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/iterators.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/spectral.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/separators.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/homepage.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/atlas.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/indexing.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/operators.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/layouts.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/cliques.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/foreign.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
copying igraph/test/bipartite.py -> build/lib.macosx-10.6-intel-2.7/igraph/test
creating build/lib.macosx-10.6-intel-2.7/igraph/app
copying igraph/app/shell.py -> build/lib.macosx-10.6-intel-2.7/igraph/app
copying igraph/app/init.py -> build/lib.macosx-10.6-intel-2.7/igraph/app
creating build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/shapes.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/edge.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/baseclasses.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/graph.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/coord.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/init.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/vertex.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/utils.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/text.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/metamagic.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
copying igraph/drawing/colors.py -> build/lib.macosx-10.6-intel-2.7/igraph/drawing
creating build/lib.macosx-10.6-intel-2.7/igraph/remote
copying igraph/remote/init.py -> build/lib.macosx-10.6-intel-2.7/igraph/remote
copying igraph/remote/nexus.py -> build/lib.macosx-10.6-intel-2.7/igraph/remote
copying igraph/remote/gephi.py -> build/lib.macosx-10.6-intel-2.7/igraph/remote
creating build/lib.macosx-10.6-intel-2.7/igraph/vendor
copying igraph/vendor/texttable.py -> build/lib.macosx-10.6-intel-2.7/igraph/vendor
copying igraph/vendor/init.py -> build/lib.macosx-10.6-intel-2.7/igraph/vendor
running build_ext
Cannot find the C core of igraph on this system using pkg-config.
We will now try to download and compile the C core from scratch.
Version number of the C core: 0.7.1.post6
We will also try: 0.7.1

Version 0.7.1.post6 of the C core of igraph is not found among the nightly builds.
Use the --c-core-version switch to try a different version.

Could not download and compile the C core of igraph.


----------------------------------------

Command "/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -u -c "import setuptools, tokenize;file='/private/tmp/pip-install-o5d5mk/python-igraph/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record /private/tmp/pip-record-h5QEiH/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/tmp/pip-install-o5d5mk/python-igraph/`
Could you please tell me how to solve this issue, I think this issus has something to do with the c-core

[ntamas]

The installer tries to download the C core of igraph from http://igraph.org/nightly/get/c/igraph-0.7.1.tar.gz; it might be the case that your network connection was not stable when you tried doing this or that our server was temporarily down. Can you try again now? I have just tried it a few minutes ago and the tarball was accessible.

[454400098]

Thanks for answering ntamas, I've tries what you told, it does not work.
But, I solve this bug in another way: I found that the python2.7 was installed in a third part version like anaconda in my computer, and I uninstall python2.7, and clear bash profile. Restart the computer, clear any dependencies of old python using brew. Finally reinstall python 2.7 and python3 in my computer, and run pip install python-igraph successfully. Igraph works both on python2.7 and 3.7.2.

[redlockon]

@454400098 Hi, I got the same problem too. Can you tell me the instruction to solve this problem like uninstall, clear bash, and clear any dependencies of old python using brew?