我已经在我的机器上安装了nodebox 2 for windows 并验证了所有示例都按原样运行。
现在我想使用图形库Graph 来做同样的事情。
我去复制它，因为它在我的站点包文件夹中，然后运行它在 IDLE 中提供的示例。
我收到ximport的错误。所以我在代码中添加了from nodebox.graphics import *
现在我收到以下错误
Traceback (most recent call last):
File "C:\Python26\Lib\site-packages\graph\graph_example2.py", line 39, in <module>
g.draw(highlight=path, weighted=True, directed=True)
File "C:\Python26\lib\site-packages\graph\__init__.py", line 453, in draw
self.update()
File "C:\Python26\lib\site-packages\graph\__init__.py", line 416, in update
self.x = _ctx.WIDTH - max.x*self.d - min_.x*self.d
AttributeError: 'NoneType' object has no attribute 'WIDTH'
有什么办法可以从 windows 的 nodebox 外部运行这个库吗？
谢谢...
我正在粘贴出现以下错误的代码...
from nodebox.graphics import *
try:
graph = ximport("graph")
except ImportError:
graph = ximport("__init__")
reload(graph)
size(600, 600)
# A graph object.
g = graph.create(iterations=500, distance=1.0)
# Add nodes with a random id,
# connected to other random nodes.
for i in range(50):
node1 = g.add_node(random(500))
if random() > 0.5:
for i in range(choice((2, 3))):
node2 = choice(g.nodes)
g.add_edge(node1.id, node2.id, weight=random())
# We leave out any orphaned nodes.
g.prune()
# Colorize nodes.
# Nodes with higher importance are blue.
g.styles.apply()
# Update the graph layout until it's done.
g.solve()
# Show the shortest path between two random nodes.
path = []
id1 = choice(g.keys())
id2 = choice(g.keys())
path = g.shortest_path(id1, id2)
# Draw the graph and display the shortest path.
g.draw(highlight=path, weighted=True, directed=True)
