code: def print_lines(self, lines, *, file=None):
      if file is None:
          file = sys.stderr
      for line in lines:
          print(line, file=file, end="")
  
imports: import inspect
  import sys
  import traceback
  from types import FrameType, TracebackType
  from typing import Union, Iterable
  from stack_data import style_with_executing_node, Options, Line, FrameInfo, LINE_GAP, Variable, RepeatedFrames, BlankLineRange, BlankLines
  from stack_data.utils import assert_
label_desc: Use image node_id 5 for calling the Formatter obj's underlying member method code with example usage: obj.print_lines(lines) without return types