code: def _copy_array_if_base_present(a):
      """
      Copy the array if its base points to a parent array.
      """
      if a.base is not None:
          return a.copy()
      elif np.issubsctype(a, np.float32):
          return np.array(a, dtype=np.double)
      else:
          return a
  
imports: import warnings
  import bisect
  from collections import deque
  import numpy
  from .None import _hierarchy, _optimal_leaf_ordering
  import scipy.spatial.distance
  from scipy._lib._disjoint_set import DisjointSet
label_desc: Use image node_id 2 for calling a global function with example usage: _copy_array_if_base_present(a) and returns: a, np, a