code: def array_to_tuple(x):
      # have to cast ndarray to hashable type in get_baseline()
      x = (
          tuple([el[0] for el in x])
          if x.__class__.__name__ == "ndarray"
          else x
      )
      return x
  
file_path: AIF360/aif360/algorithms/inprocessing/gerryfair/clean.py
imports: import argparse
  import numpy
  import pandas
label_desc: Use image node_id 4 for calling a global function with example usage: array_to_tuple(x) and returns: x