code: def rvs(
      a: np.ndarray,
      b: np.ndarray,
      loc: Union[np.ndarray, float] = 0,
      scale: Union[np.ndarray, float] = 1,
      random_state: Optional[np.random.RandomState] = None,
  ) -> np.ndarray:
      random_state = random_state or np.random.RandomState()
      size = np.broadcast(a, b, loc, scale).shape
      percentiles = random_state.uniform(low=0, high=1, size=size)
      return ppf(percentiles, a, b) * scale + loc
  
imports: import functools
  import math
  import sys
  from typing import Callable
  from typing import Optional
  from typing import Union
  import numpy
  from optuna.samplers._tpe._erf import erf
label_desc: Use image node_id 13 for calling a global function with example usage: rvs(a, b, loc, scale, random_state) and returns: unknown