code: def _get_weights(self, dimension: int) -> np.ndarray:
      if self._weights is None:  # caching for speed
          self._weights = self.alpha ** np.linspace(
              0, 0.5, num=dimension
          )
      return self._weights
  
imports: from typing import List, Callable, Optional
  from math import exp, sqrt
  import numpy
label_desc: Use image node_id 2 for calling the Illconditionning obj's underlying member method code with example usage: obj._get_weights(dimension) and returns: self