code: def _valid_error_name(name):
      """Check whether name is a valid error name."""
      return all(x.isalnum() or x in "_." for x in name)
  
imports: import re
  import atexit
  import ctypes
  import os
  import sys
  import inspect
  import platform
  import numpy
  from .None import libinfo
label_desc: Use image node_id 4 for calling a global function with example usage: _valid_error_name(name) and returns: all