code: def _validate_greaterequal0_lessequal1(s):
      s = validate_float(s)
      if 0 <= s <= 1:
          return s
      else:
          raise RuntimeError(f"Value must be >=0 and <=1; got {s}")
  
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 34 for calling a global function with example usage: _validate_greaterequal0_lessequal1(s) and returns: s