code: def get_input_encoding():
      """Return the default standard input encoding.
  
      If sys.stdin has no encoding, 'ascii' is returned."""
      # There are strange environments for which sys.stdin.encoding is None. We
      # ensure that a valid encoding is returned.
      encoding = getattr(sys.stdin, "encoding", None)
      if encoding is None:
          encoding = "ascii"
      return encoding
  
imports: from warnings import warn
  import ast
  import codeop
  import io
  import re
  import sys
  import tokenize
  import warnings
  from typing import List, Tuple, Union, Optional
  from types import CodeType
  from IPython.core.inputtransformer import leading_indent, classic_prompt, ipy_prompt, cellmagic, assemble_logical_lines, help_end, escaped_commands, assign_from_magic, assign_from_system, assemble_python_lines
  from IPython.utils import tokenutil
  from IPython.core.inputtransformer import ESC_SHELL, ESC_SH_CAP, ESC_HELP, ESC_HELP2, ESC_MAGIC, ESC_MAGIC2, ESC_QUOTE, ESC_QUOTE2, ESC_PAREN, ESC_SEQUENCES
label_desc: Use image node_id 7 for calling a global function with example usage: get_input_encoding() and returns: encoding