code: def _copy_arrays_if_base_present(T):
      """
      Accept a tuple of arrays T. Copies the array T[i] if its base array
      points to an actual array. Otherwise, the reference is just copied.
      This is useful if the arrays are being passed to a C function that
      does not do proper striding.
      """
      l = [_copy_array_if_base_present(a) for a in T]
      return l
  
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 3 for calling a global function with example usage: _copy_arrays_if_base_present(T) and returns: l