class_docstr: Class for the Numpy  backend.
code: def is_array(x):
      return type(x) is _np.ndarray
  
imports: import numpy
  from scipy.spatial.distance import cdist, pdist
  from sklearn.metrics.pairwise import euclidean_distances, pairwise_distances
label_desc: Use image node_id 6 for calling the NumPyBackend obj's underlying member method code with example usage: obj.is_array(x) and returns: unknown