系統環境
Ubuntu 16.04+Anaconda2-4.3.0
安裝過程
安裝python-igraph：pip install python-igraph
只安裝python-igraph會發現無法導入包，即：import igraph會報錯
錯誤信息如下：`—————————————————————————
ImportError Traceback (most recent call last)
in ()
—-> 1 import igraph
/home/xyw/anaconda2/lib/python2.7/site-packages/igraph/init.py in ()
32 # pylint: disable-msg=W0401
33 # W0401: wildcard import
—> 34 from igraph._igraph import *
35 from igraph._igraph import version, build_date
36 from igraph.clustering import *
ImportError: /home/xyw/anaconda2/lib/python2.7/site-packages/igraph/_igraph.so: undefined symbol: _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC1Ev
`
後經查找發現是libstdc++版本不匹配導致的，解決方法：conda install libgcc