new_contents: #!/usr/bin/env python
  """Helper script to compare two argparse.Namespace objects."""
  
  from argparse import Namespace
  
  
  def main():
  
      ns1 = eval(input('Namespace 1: '))
      ns2 = eval(input('Namespace 2: '))
  
      def keys(ns):
          ks = set()
          for k in dir(ns):
              if not k.startswith('_'):
                  ks.add(k)
          return ks
  
      k1 = keys(ns1)
      k2 = keys(ns2)
  
      def print_keys(ks, ns1, ns2=None):
          for k in ks:
              if ns2 is None:
                  print('{}\t{}'.format(k, getattr(ns1, k, None)))
              else:
                  print('{}\t{}\t{}'.format(k, getattr(ns1, k, None), getattr(ns2, k, None)))
  
      print('Keys unique to namespace 1:')
      print_keys(k1 - k2, ns1)
      print()
  
      print('Keys unique to namespace 2:')
      print_keys(k2 - k1, ns2)
      print()
  
      print('Overlapping keys with different values:')
      ks = [k for k in k1 & k2 if getattr(ns1, k, 'None') != getattr(ns2, k, 'None')]
      print_keys(ks, ns1, ns2)
      print()
  
  
  if __name__ == '__main__':
      main()
  
subject: Add compare_namespaces.py helper