class_docstr: An operation to wait on a previously received array using MPI.
  
  See Also
  --------
  MPIRecv
  
  Notes
  -----
  Non-differentiable.
class_docstr_tok: ["An","operation","to","wait","on","a","previously","received","array","using","MPI",".","See","Also","--","--","--","--","MPIRecv","Notes","--","--","-","Non-differentiable","."]
code: def infer_shape(self, node, shapes):
      return [shapes[1]]
  
imports: from __future__ import absolute_import, print_function, division
  import numpy
  from theano import gof
  from theano.gof import Constant, Generic, Op
  from theano.gof.sched import key_to_cmp
  from theano.tensor import tensor
  import theano
label_desc: Use image node_id 4 for calling the MPIRecvWait obj's underlying member method code with example usage: obj.infer_shape(node, shapes) and returns: list