docstr: The DOT source code as string.
docstr_tok: ["The","DOT","source","code","as","string","."]
code: def __str__(self):
      """The DOT source code as string."""
      return self.source
  
imports: import codecs
  import io
  import locale
  import logging
  import os
  from ._compat import text_type
  from .None import backend
  from .None import tools
label_desc: Use image node_id 3 for calling the File obj's underlying member method code with example usage: obj.__str__() and returns: self