code: def validate_bool(b):
      """Convert b to ``bool`` or raise."""
      if isinstance(b, str):
          b = b.lower()
      if b in ("t", "y", "yes", "on", "true", "1", 1, True):
          return True
      elif b in ("f", "n", "no", "off", "false", "0", 0, False):
          return False
      else:
          raise ValueError(f"Cannot convert {b!r} to bool")
  
imports: import ast
  from functools import lru_cache, reduce
  from numbers import Real
  import operator
  import os
  import re
  import numpy
  from matplotlib import _api, cbook
  from matplotlib.cbook import ls_mapper
  from matplotlib.colors import Colormap, is_color_like
  from matplotlib._fontconfig_pattern import parse_fontconfig_pattern
  from matplotlib._enums import JoinStyle, CapStyle
  from cycler import Cycler, cycler
label_desc: Use image node_id 4 for calling a global function with example usage: validate_bool(b) and returns: True, False