pygraphviz，ImportError：未定义的符号：Agundirected

问题描述

  import pygraphviz 
 
 Traceback（最近一次调用最后一次）：
文件< stdin>，第1行，< module> 
文件/usr/local/lib/python2.7/dist-packages/pygraphviz/__init__.py，第58行，< module>来自.agraph的
导入AGraph，Node，Edge，Attribute，ItemAttribute，DotError 
文件/usr/local/lib/python2.7/dist-packages/pygraphviz/agraph.py，第26行，在< module>中
来自。将graphviz导入为gv 
文件/usr/local/lib/python2.7/dist-packages/pygraphviz/graphviz.py，第28行，< module> 
 _graphviz = swig_import_helper（）
文件/usr/local/lib/python2.7/dist-packages/pygraphviz/graphviz.py，第24行，swig_import_helper 
 _mod = imp。 load_module（'_ graphviz'，fp，pathname，description）
 ImportError：/usr/local/lib/python2.7/dist-packages/pygraphviz/_graphviz.so:undefined symbol：Agundirected 
  

我已经尝试过

  pip install pygraphviz --install-option = -  include-path = / usr / include / graphviz--install-option = -  library-path = / usr / lib / graphviz / 
  

我也试过这个答案，但仍然无法正常工作

  pip uninstall pygraphviz 
  

然后检查你的路径：

  pkg-config --libs-only-L libcgraph 
 pkg-config --cflags -only-I libcgraph 
  

该命令应该告诉库的路径，例如：

  -I / usr / include / graphviz 
  

然后，使用上面输出的路径，在[virtualenv]中运行命令：

  pip install pygraphviz --install-option = -  include-path = / usr / include / graphviz--install-option = -  library-path = / usr / lib / graphviz /
  

资料来源：

import pygraphviz

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.7/dist-packages/pygraphviz/__init__.py", line 58, in <module>
    from .agraph import AGraph, Node, Edge, Attribute, ItemAttribute, DotError
File "/usr/local/lib/python2.7/dist-packages/pygraphviz/agraph.py", line 26, in <module>
    from . import graphviz as gv
File "/usr/local/lib/python2.7/dist-packages/pygraphviz/graphviz.py", line 28, in <module>
    _graphviz = swig_import_helper()
File "/usr/local/lib/python2.7/dist-packages/pygraphviz/graphviz.py", line 24, in swig_import_helper
    _mod = imp.load_module('_graphviz', fp, pathname, description)
ImportError: /usr/local/lib/python2.7/dist-packages/pygraphviz/_graphviz.so: undefined symbol: Agundirected

I have already tried

pip install pygraphviz --install-option="--include-path=/usr/include/graphviz" --install-option="--library-path=/usr/lib/graphviz/"

I have also tried this answer but still not working

Python does not see pygraphviz

解决方案

First of all, uninstall your current module:

 pip uninstall pygraphviz

then check your paths with:

 pkg-config --libs-only-L libcgraph
 pkg-config --cflags-only-I libcgraph

That commands should tell the path to the library, for example:

-I/usr/include/graphviz

Then, using the path from the above output, run [within your virtualenv] the command:

pip install pygraphviz --install-option="--include-path=/usr/include/graphviz" --install-option="--library-path=/usr/lib/graphviz/"

Source: https://github.com/pygraphviz/pygraphviz/issues/71

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