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Полная версия: Проблема с импортом библиотеки

Начало » Python для новичков » Проблема с импортом библиотеки

Relrin

Окт. 2, 2012 20:49:55

Скачал и поставил библиотеку для графов - python-graph (http://code.google.com/p/python-graph/).
В последствии выяснилось, что нужна некая библиотека Graphviz, которую я скачал отсюда http://www.graphviz.org/ под винду. Поставил в корень: С:\Graphviz\
Но началось все с того, что начало выдавать ошибку при импорте:

Traceback (most recent call last):
File “C:\Code\py_ex1\main.py”, line 6, in <module>
import gvc
ImportError: No module named gv

Немогу понять в чем дело. Подскажите, пожалуйста решение проблемы.

Код:

# Import graphviz
import sys
import gv #<---- тут ошибка
# 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)
gvv = gv.readstring(dot)
gv.layout(gvv,'dot')
gv.render(gvv,'png','europe.png')

adray

Окт. 2, 2012 21:21:47

Модули должны быть расположены в sys.path

>>> import sys
>>> sys.path
['', '/usr/lib/python27.zip', '/usr/lib/python2.7', 
...