code: def transform(self, node, results):
      syms = self.syms
  
      tail = [n.clone() for n in results["tail"]]
  
      try_cleanup = [ch.clone() for ch in results["cleanup"]]
      for except_clause, e_suite in find_excepts(try_cleanup):
          if len(except_clause.children) == 4:
              (E, comma, N) = except_clause.children[1:4]
              comma.replace(Name("as", prefix=" "))
  
              if N.type != token.NAME:
                  # Generate a new N for the except clause
                  new_N = Name(self.new_name(), prefix=" ")
                  target = N.clone()
                  target.prefix = ""
                  N.replace(new_N)
                  new_N = new_N.clone()
  
                  # Insert "old_N = new_N" as the first statement in
                  #  the except body. This loop skips leading whitespace
                  #  and indents
                  # TODO(cwinter) suite-cleanup
                  suite_stmts = e_suite.children
                  for i, stmt in enumerate(suite_stmts):
                      if isinstance(stmt, pytree.Node):
                          break
  
                  # The assignment is different if old_N is a tuple or list
                  # In that case, the assignment is old_N = new_N.args
                  if is_tuple(N) or is_list(N):
                      assign = Assign(target, Attr(new_N, Name("args")))
                  else:
                      assign = Assign(target, new_N)
  
                  # TODO(cwinter) stopgap until children becomes a smart list
                  for child in reversed(suite_stmts[:i]):
                      e_suite.insert_child(0, child)
                  e_suite.insert_child(i, assign)
              elif N.prefix == "":
                  # No space after a comma is legal; no space after "as",
                  # not so much.
                  N.prefix = " "
  
      # TODO(cwinter) fix this when children becomes a smart list
      children = (
          [c.clone() for c in node.children[:3]] + try_cleanup + tail
      )
      return pytree.Node(node.type, children)
  
file_path: catboost/contrib/tools/python/src/Lib/lib2to3/fixes/fix_except.py
imports: from ..None import pytree
  from ..pgen2 import token
  from ..None import fixer_base
  from ..fixer_util import Assign, Attr, Name, is_tuple, is_list, syms
label_desc: Use image node_id 1 for calling the FixExcept obj's underlying member method code with example usage: obj.transform(node, results) and returns: pytree