You have compiled igraph for Python 3.5, so you cannot import it in 2.7.
Plotting requires the Cairo module for Python. Please compile and install Cairo
for Python 3.5 and retry.
T.
> On 2016. Sep 21., at 8:49, <sizheng0...@sina.com> <sizheng0...@sina.com>
> wrote:
>
>
> Thank you Tamas. But still I can't go forward by both of python2.7 nor
> python3.5.1...
>
> when I run it by python2.7, I got:
>
> ---------------------------------------------------------------------------
> ImportError Traceback (most recent call last)
> <ipython-input-2-9e06b667a294> in <module>()
> ----> 1 import igraph
> 2 from igraph import plot
> 3
> 4 g =
> igraph.Graph.Read("/home/sizheng/hdg/sizheng/myfitness/1/3_1_5000.edges",format="edgelist")
> 5
>
> /usr/lib64/python2.7/site-packages/igraph/__init__.py in <module>()
> 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: /usr/lib64/python2.7/site-packages/igraph/_igraph.so: undefined
> symbol: _ZTVN10__cxxabiv121__vmi_class_type_infoE
>
> when I run it by python3.5.1, I got:
>
> ---------------------------------------------------------------------------
> TypeError Traceback (most recent call last)
> <ipython-input-2-40f2a8de40be> in <module>()
> 1 dd = g.degree_distribution()
> ----> 2 plot(dd).show()
>
> /usr/local/lib/python3.5/site-packages/igraph/drawing/__init__.py in
> plot(obj, target, bbox, *args, **kwds)
> 444 bbox = BoundingBox(bbox)
> 445
> --> 446 result = Plot(target, bbox, background=kwds.get("background",
> "white"))
> 447
> 448 if "margin" in kwds:
>
> /usr/local/lib/python3.5/site-packages/igraph/drawing/__init__.py in
> __init__(self, target, bbox, palette, background)
> 115 """
> 116 self._filename = None
> --> 117 self._surface_was_created = not isinstance(target,
> cairo.Surface)
> 118 self._need_tmpfile = False
> 119
>
> /usr/local/lib/python3.5/site-packages/igraph/drawing/utils.py in
> __getattr__(self, _)
> 394
> 395 def __getattr__(self, _):
> --> 396 raise TypeError("plotting not available")
> 397 def __call__(self, _):
> 398 raise TypeError("plotting not available")
>
> TypeError: plotting not available
>
>
> Regards,
> sizheng
> _______________________________________________
> igraph-help mailing list
> igraph-help@nongnu.org
> https://lists.nongnu.org/mailman/listinfo/igraph-help
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