问题
I am writing a program that tries to compare two methods. I would like to generate Control flow graphs (CFG) for all matched methods and use either a topological sort to compare the two graphs.
回答1:
RPython, the translation toolchain behind PyPy, offers a way of grabbing the flow graph (in the pypy/rpython/flowspace directory of the PyPy project) for type inference.
This works quite well in most cases but generators are not supported. The result will be in SSA form, which might be good or bad, depending on what you want.
回答2:
http://pycallgraph.slowchop.com/ looks like what you need.
Python trace module also have option --trackcalls that can be an entrypoint for call tracing machinery in stdlib.
来源：https://stackoverflow.com/questions/6204914/what-is-the-easiest-way-to-generate-a-control-flow-graph-for-a-method-in-python