code: def _make_type_validator(cls, *, allow_none=False):
      """
      Return a validator that converts inputs to *cls* or raises (and possibly
      allows ``None`` as well).
      """
  
      def validator(s):
          if allow_none and (
              s is None or isinstance(s, str) and s.lower() == "none"
          ):
              return None
          if cls is str and not isinstance(s, str):
              raise ValueError(f"Could not convert {s!r} to str")
          try:
              return cls(s)
          except (TypeError, ValueError) as e:
              raise ValueError(
                  f"Could not convert {s!r} to {cls.__name__}"
              ) from e
  
      validator.__name__ = f"validate_{cls.__name__}"
      if allow_none:
          validator.__name__ += "_or_None"
      validator.__qualname__ = (
          validator.__qualname__.rsplit(".", 1)[0]
          + "."
          + validator.__name__
      )
      return validator
  
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 7 for calling a global function with example usage: _make_type_validator(cls) and returns: validator, None, cls