x = [1, 2, 3]
y = [x, dict(key1=x)]
z = [y, (x, y)]
import objgraph
objgraph.show_refs([y],filename='sample.png')
运行时报如下错误
Graph viewer (xdot) and image renderer (dot) not found, not doing anyt
hing else... 原因: 缺少依赖包
install python-xdot perl-Image-Dot