code: def is_nondecreasing(arr):
      """Returns true if the sequence is non-decreasing."""
      return all([x <= y for x, y in zip(arr, arr[1:])])
  
file_path: dragonfly/dragonfly/utils/ancillary_utils.py
imports: import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: is_nondecreasing(arr) and returns: all