code: def free(self):
      if self.win:
          self.win.Free()
      if self.mem:
          MPI.Free_mem(self.mem)
          self.mem = None
      if self.get_type:
          self.get_type.Free()
      if self.acc_type:
          self.acc_type.Free()
  
file_path: mpi4py/demo/nxtval/nxtval-scalable.py
imports: from mpi4py import MPI
  import struct
label_desc: Use image node_id 2 for calling the Counter obj's underlying member method code with example usage: obj.free() without return types