Python 3.3 无法运行此代码，因为它没有 pygraph 是他们安装 pygraph 的简单方法，或者我可以以某种方式修改代码答案

【问题标题】：Python 3.3 cannot run this code because it does not have pygraph is their a simple way to install pygraph or can I ammend the code in some wayPython 3.3 无法运行此代码，因为它没有 pygraph 是他们安装 pygraph 的简单方法，或者我可以以某种方式修改代码
【发布时间】：2013-10-15 06:53:39
【问题描述】：

Python 3.3 无法运行此代码，因为它没有 pygraph 是他们安装 pygraoh 的简单方法，或者我可以以某种方式修改代码。如您所见，我认为其余的都很好。这只是一个相当大的问题

# Import graphviz
import sys

# Import pygraph
from pygraph.classes.graph import graph
from pygraph.classes.digraph import digraph
from pygraph.algorithms.searching import breadth_first_search
from pygraph.readwrite.dot import write

# Graph creation
gr = graph()

# Add nodes and edges
gr.add_nodes(["Portugal","Spain","France","Germany","Belgium","Netherlands","Italy"])
gr.add_nodes(["Switzerland","Austria","Denmark","Poland","Czech Republic","Slovakia","Hungary"])
gr.add_nodes(["England","Ireland","Scotland","Wales"])

gr.add_edge(("Portugal", "Spain"))
gr.add_edge(("Spain","France"))
gr.add_edge(("France","Belgium"))
gr.add_edge(("France","Germany"))
gr.add_edge(("France","Italy"))
gr.add_edge(("Belgium","Netherlands"))
gr.add_edge(("Germany","Belgium"))
gr.add_edge(("Germany","Netherlands"))
gr.add_edge(("England","Wales"))
gr.add_edge(("England","Scotland"))
gr.add_edge(("Scotland","Wales"))
gr.add_edge(("Switzerland","Austria"))
gr.add_edge(("Switzerland","Germany"))
gr.add_edge(("Switzerland","France"))
gr.add_edge(("Switzerland","Italy"))
gr.add_edge(("Austria","Germany"))
gr.add_edge(("Austria","Italy"))
gr.add_edge(("Austria","Czech Republic"))
gr.add_edge(("Austria","Slovakia"))
gr.add_edge(("Austria","Hungary"))
gr.add_edge(("Denmark","Germany"))
gr.add_edge(("Poland","Czech Republic"))
gr.add_edge(("Poland","Slovakia"))
gr.add_edge(("Poland","Germany"))
gr.add_edge(("Czech Republic","Slovakia"))
gr.add_edge(("Czech Republic","Germany"))
gr.add_edge(("Slovakia","Hungary"))

# Draw as PNG
dot = write(gr)
f = open('europe.dot', 'a')
f.write(dot)
f.close()
import os
command = '"C:\\Program Files\\Graphviz 2.28\\bin\\dot.exe" -Tpng europe.dot > europe.png'
print(command)
os.system(command)
os.system('europe.png')

【问题讨论】：

标签： python python-3.3 pygraph

【解决方案1】：

您应该可以使用pip install python-graph-core 或easy_install python-graph-core - 如果这不起作用，那么您需要从here 下载它，解压/压缩它并在生成的目录中运行：

python setup.py install

或

python3 setup.py install

您需要为 -core 和 -dot 包执行此操作。

如果您这样做，则需要确保在您的安装中满足依赖项（pydot 和 pyparsing）。

【讨论】：