code: def _init_io_module():
      
      plist = ctypes.POINTER(ctypes.c_void_p)()
      size = ctypes.c_uint()
      check_call(_LIB.MXListDataIters(ctypes.byref(size), ctypes.byref(plist)))
      module_obj = sys.modules[__name__]
      for i in range(size.value):
          hdl = ctypes.c_void_p(plist[i])
          dataiter = _make_io_iterator(hdl)
          setattr(module_obj, dataiter.__name__, dataiter)
docs: List and add all the data iterators to current module.