code: def dump(self, file=sys.stdout):
      self.out.seek(0)
      print(self.out.read(), file=file)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  from ...asttools import Visitor
  import sys
  import _ast
  from warnings import warn
label_desc: Use image node_id 2 for calling the ASTPrinter obj's underlying member method code with example usage: obj.dump(file) without return types