code: def mpidtype(self):
      try:
          return self.TypeMap[self.typecode]
      except KeyError:
          return MPI.DATATYPE_NULL
  
imports: import sys
  import itertools
  from mpi4py import MPI
label_desc: Use image node_id 4 for calling the BaseArray obj's underlying member method code with example usage: obj.mpidtype() and returns: self, MPI