node 节点属性如下 ：

Name Default Values
color black node shape color
comment   any string (format-dependent)
distortion 0.0 node distortion for shape=polygon
fillcolor lightgrey/black node fill color
fixedsize false label text has no affect on node size
fontcolor black type face color
fontname Times-Roman font family
fontsize 14 point size of label
group   name of node’s group
height .5 height in inches
label node name any string
layer overlay range all, id or id:id
orientation 0.0 node rotation angle
peripheries shape-dependent number of node boundaries
regular false force polygon to be regular
shape ellipse node shape; see Section 2.1 and Appendix E
shapefile   external EPSF or SVG custom shape file
sides 4 number of sides for shape=polygon
skew 0.0 skewing of node for shape=polygon
style   graphics options, e.g. bold, dotted, filled; cf. Section 2.3
URL   URL associated with node (format-dependent)
width .75 width in inches
z 0.0 z coordinate for VRML output

edge 边框属性如下：

Name Default Values
arrowhead normal style of arrowhead at head end
arrowsize 1.0 scaling factor for arrowheads
arrowtail normal style of arrowhead at tail end
color black edge stroke color
comment   any string (format-dependent)
constraint true use edge to affect node ranking
decorate   if set, draws a line connecting labels with their edges
dir forward forward, back, both, or none
fontcolor black type face color
fontname Times-Roman font family
fontsize 14 point size of label
headlabel   label placed near head of edge
headport   n,ne,e,se,s,sw,w,nw
headURL   URL attached to head label if output format is ismap
label   edge label
labelangle -25.0 angle in degrees which head or tail label is rotated off edge
labeldistance 1.0 scaling factor for distance of head or tail label from node
labelfloat false lessen constraints on edge label placement
labelfontcolor black type face color for head and tail labels
labelfontname Times-Roman font family for head and tail labels
labelfontsize 14 point size for head and tail labels
layer overlay range all, id or id:id
lhead   name of cluster to use as head of edge
ltail   name of cluster to use as tail of edge
minlen 1 minimum rank distance between head and tail
samehead   tag for head node; edge heads with the same tag are
sametail   merged onto the same port
style   tag for tail node; edge tails with the same tag are merged onto the same port
taillabel   graphics options, e.g. bold, dotted, filled; cf. Section 2.3
tailport   label placed near tail of edge n,ne,e,se,s,sw,w,nw
tailURL   URL attached to tail label if output format is ismap
weight 1 integer cost of stretching an edge

 

Digraph 图属性如下：

Name Default Values
bgcolor   background color for drawing, plus initial fill color
center false center drawing on page
clusterrank local may be global or none
color black for clusters, outline color, and fill color if fillcolor not defined
comment   any string (format-dependent)
compound false allow edges between clusters
concentrate false enables edge concentrators
fillcolor black cluster fill color
fontcolor black type face color
fontname Times-Roman font family
fontpath   list of directories to search for fonts
fontsize 14 point size of label
label   any string
labeljust centered ”l” and ”r” for left- and right-justified cluster labels, respectively
labelloc top ”t” and ”b” for top- and bottom-justified cluster labels, respectively
layers   id:id:id…
margin .5 margin included in page, inches
mclimit 1.0 scale factor for mincross iterations
nodesep .25 separation between nodes, in inches.
nslimit   if set to f, bounds network simplex iterations by (f)(number of nodes) when setting x-coordinates
nslimit1   if set to f, bounds network simplex iterations by (f)(number of nodes) when ranking nodes
ordering   if out out edge order is preserved
orientation portrait if rotate is not used and the value is landscape, use landscape orientation
page   unit of pagination, e.g. “8.5,11”
pagedir BL traversal order of pages
quantum   if quantum ¿ 0.0, node label dimensions will be rounded to integral multiples of quantum
rank   same, min, max, source or sink
rankdir TB LR (left to right) or TB (top to bottom)
ranksep .75 separation between ranks, in inches.
ratio   approximate aspect ratio desired, fill or auto
remincross   if true and there are multiple clusters, re-run crossing minimization
rotate   If 90, set orientation to landscape
samplepoints 8 number of points used to represent ellipses and circles on output (cf. Appendix C
searchsize 30 maximum edges with negative cut values to check when looking for a minimum one during network simplex
size   maximum drawing size, in inches
style   graphics options, e.g. filled for clusters
URL   URL associated with graph (format-dependent) 
from graphviz import Graph
from graphviz import Digraph


# 绘制无向图
def draw_Graph():
    # 创建对象，设置对象属性
    dot = Graph(name=\'无向图\', filename=r\'D:\Cache\python\无向图\', format=\'png\')
    # 设置节点属性, 修改 fontname 属性可解决中文输出乱码问题
    dot.node_attr.update(shape=\'ellipse\', color=\'black\', fillcolor=\'lightgrey\', fontcolor=\'black\', fontsize=\'18\',
                         fontname=\'Microsoft YaHei\', width=\'4\', height=\'2\', style=\'bold\')
    # 创建节点, 设置节点名字、内容
    dot.node(\'A\', \'小朋友\')
    dot.node(\'B\', \'小学生\')
    dot.node(\'C\', \'初中生\')
    dot.node(\'D\', \'高中生\')
    dot.node(\'E\', \'大学生\')
    dot.node(\'F\', \'研究生\')
    dot.node(\'G\', \'博士生\')
    dot.node(\'H\', \'医生\')
    dot.node(\'I\', \'老师\')
    dot.node(\'J\', \'程序员\')
    dot.node(\'K\', \'会计\')
    dot.node(\'L\', \'公务员\')
    dot.node(\'M\', \'教授\')
    # 设置边属性
    dot.edge_attr.update(color=\'black\', fontcolor=\'black\', fontsize=\'18\', fontname=\'Microsoft YaHei\')
    # 创建单边，设置边内容
    dot.edge(\'A\', \'B\', \'升级\')
    dot.edge(\'B\', \'C\', \'升级\')
    dot.edge(\'C\', \'D\', \'升级\')
    dot.edge(\'D\', \'E\', \'升级\')
    dot.edge(\'E\', \'F\', \'升级\')
    dot.edge(\'F\', \'G\', \'升级\')
    # 创建多边，不能设置边内容
    dot.edges([\'EI\', \'FI\', \'GI\', \'FH\', \'GH\', \'EJ\', \'FJ\', \'GJ\', \'EK\', \'FK\', \'GK\', \'EL\', \'FL\', \'GL\', \'GM\'])
    # 打印生成的源代码，pdf 格式无法打印
    print(dot.source)
    # 保存图片，不显示图片
    dot.render(filename=\'无向图\', directory=r\'D:\Cache\python\')
    # 保存图片，并显示图片
    dot.view(filename=\'无向图\', directory=r\'D:\Cache\python\')


# 绘制有向图
def draw_Digraph():
    # 创建对象，设置对象属性
    dot = Digraph(name=\'有向图\', filename=r\'D:\Cache\python\有向图\', format=\'pdf\')
    # 设置节点属性, 修改 fontname 属性可解决中文输出乱码问题
    dot.node_attr.update(shape=\'ellipse\', color=\'black\', fillcolor=\'lightgrey\', fontcolor=\'black\', fontsize=\'18\',
                         fontname=\'Microsoft YaHei\', width=\'4\', height=\'2\', style=\'bold\')
    # 创建节点, 设置节点名字、内容
    dot.node(\'A\', \'小朋友\')
    dot.node(\'B\', \'小学生\')
    dot.node(\'C\', \'初中生\')
    dot.node(\'D\', \'高中生\')
    dot.node(\'E\', \'大学生\')
    dot.node(\'F\', \'研究生\')
    dot.node(\'G\', \'博士生\')
    dot.node(\'H\', \'医生\')
    dot.node(\'I\', \'老师\')
    dot.node(\'J\', \'程序员\')
    dot.node(\'K\', \'会计\')
    dot.node(\'L\', \'公务员\')
    dot.node(\'M\', \'教授\')
    # 设置边属性, arrowhead 为前端箭头样式, arrowsize 为箭头缩放比例, minlen 为边头部和尾部的距离, pnewidth 为边宽度
    dot.edge_attr.update(color=\'black\', fontcolor=\'black\', fontsize=\'18\', fontname=\'Microsoft YaHei\',
                         arrowhead=\'diamond\', arrowsize=\'2.0\', minlen=\'3\', penwidth=\'2\', style=\'dashed\')
    # 创建单边，设置边内容
    dot.edge(\'A\', \'B\', \'升级\')
    dot.edge(\'B\', \'C\', \'升级\')
    dot.edge(\'C\', \'D\', \'升级\')
    dot.edge(\'D\', \'E\', \'升级\')
    dot.edge(\'E\', \'F\', \'升级\')
    dot.edge(\'F\', \'G\', \'升级\')
    # 创建多边，不能设置边内容
    dot.edges([\'EI\', \'FI\', \'GI\', \'FH\', \'GH\', \'EJ\', \'FJ\', \'GJ\', \'EK\', \'FK\', \'GK\', \'EL\', \'FL\', \'GL\', \'GM\'])
    # 保存图片，不显示图片
    dot.render(filename=\'有向图\', directory=r\'D:\Cache\python\')
    # 保存图片，并显示图片
    dot.view(filename=\'有向图\', directory=r\'D:\Cache\python\')


if __name__ == \'__main__\':
    draw_Graph()

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