python+igrph。类型错误：打印不可用

Question

我想用python笔记本，igraph包画图，示例代码在这里（我认为是对的）

!pip install cairocffi
import cairocffi as cairo

corlor = []
for i in g.vs['name']:
    if set([i]) < set(degree_15):
        corlor.append('red')
    elif set([i]) < set(degree_30):
        corlor.append('rgba(255,0,0,0.5)')
    elif set([i]) < set(degree_60):
        corlor.append('orange')
    else:
        corlor.append('yellow')
ig.plot(g,
        #'C:\Users\Vincent Du\Desktop\degree_plot.jpg',
        layout=geometry_layout,
        vertex_label=g.vs['name'],
        scale=1.0,
        vertex_color=corlor,
        vertex_frame_width=0.5,
        edge_width=0.05,
        vertex_label_size=ig.rescale(g.degree(),out_range=(1,12)),
        vertex_size=ig.rescale(g.degree(),out_range=(5,25)),
        bbox=(1200,800),
        margin = 10,
       )

还有一个错误。我不知道怎么解决这个问题，谢谢！在

^{pr2}$

我想我已经安装了cairo，但它仍然不起作用

Answer 1

Python 3.7版本：

(/home/victoria/venv/py37)$ python

  Python 3.7.3 (default, Mar 26 2019, 21:43:19) 
  [GCC 8.2.1 20181127] on linux
  Type "help", "copyright", "credits" or "license" for more information.

  >>> from igraph import *
  >>> g = Graph.Famous("petersen")
  >>> plot(g)
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
    ...
  TypeError: plotting not available

• https://github.com/igraph/python-igraph/issues/129
• python + igraph "plotting not available"
• python - igraph plot not available (cairo already installed)

^{pr2}$

现在绘制（忽略警告）：

(/home/victoria/venv/py37)$ python

  Python 3.7.3 (default, Mar 26 2019, 21:43:19) 
  [GCC 8.2.1 20181127] on linux
  Type "help", "copyright", "credits" or "license" for more information.
  >>> from igraph import *
  >>> g = Graph.Famous("petersen")
  >>> plot(g)

  (gthumb:31636): Gtk-WARNING **: 14:43:58.342: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Method "RegisterClient" with signature "ss" on interface "org.xfce.Session.Manager" doesn't exist
  <igraph.drawing.Plot object at 0x7f1810e36e80>

  >>>

结果：

Answer 2

我不知道你的数据类型是什么ig.图（）接受，但正如“TypeError”所示，某些参数的数据类型错误。 而且似乎你在用Python3，它应该是pip3而不是pip。 希望这对你有帮助。在