【依赖】astor报错：AttributeError: No defined handler for node of type Match

在特定代码转换时，由astor依赖报如下错误：
https://github.com/felix-lyx/prose/blob/main/prose_fd/models/transformer.py

  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 63, in to_source
    generator.visit(node)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/node_util.py", line 143, in visit
    return visitor(node)
           ^^^^^^^^^^^^^
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 878, in visit_Module
    self.write(*node.body)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 178, in write
    visit(item)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/node_util.py", line 143, in visit
    return visitor(node)
           ^^^^^^^^^^^^^
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 364, in visit_ClassDef
    self.body(node.body)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 226, in body
    self.write(*statements)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 178, in write
    visit(item)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/node_util.py", line 143, in visit
    return visitor(node)
           ^^^^^^^^^^^^^
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 335, in visit_FunctionDef
    self.body(node.body)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 226, in body
    self.write(*statements)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 178, in write
    visit(item)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/node_util.py", line 143, in visit
    return visitor(node)
           ^^^^^^^^^^^^^
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 378, in visit_If
    self.body(node.body)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 226, in body
    self.write(*statements)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/code_gen.py", line 178, in write
    visit(item)
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/node_util.py", line 143, in visit
    return visitor(node)
           ^^^^^^^^^^^^^
  File "/home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages/astor/node_util.py", line 137, in abort_visit
    raise AttributeError(msg % node.__class__.__name__)
AttributeError: No defined handler for node of type Match

依赖版本：

pip show astor                                                      
Name: astor
Version: 0.8.1
Summary: Read/rewrite/write Python ASTs
Home-page: https://github.com/berkerpeksag/astor
Author: Patrick Maupin
Author-email: pmaupin@gmail.com
License: BSD-3-Clause
Location: /home/lkyu/miniconda3/envs/py312_torch291_cu128/lib/python3.12/site-packages
Requires: 
Required-by: depyf, paconvert

已反馈到https://github.com/berkerpeksag/astor/issues/234

Start with prose_fd/models/transformer.py and reproduce the failure through astor when processing a Match node. Compare the conversion path with the upstream astor issue #234, then determine the project-local fix or dependency decision. Done means the reported transformation no longer raises the AttributeError.