class_docstr: An example of A2C feedforward mellowmax policy.
class_docstr_tok: ["An","example","of","A2C","feedforward","mellowmax","policy","."]
code: def pi_and_v(self, state):
      return self.pi(state), self.v(state)
  
imports: import argparse
  import functools
  import chainer
  from chainer import functions
  import gym
  import numpy
  import chainerrl
  from chainerrl.agents import a2c
  from chainerrl import experiments
  from chainerrl import links
  from chainerrl import misc
  from chainerrl.optimizers.nonbias_weight_decay import NonbiasWeightDecay
  from chainerrl import policies
  from chainerrl import v_function
label_desc: Use image node_id 2 for calling the A2CFFMellowmax obj's underlying member method code with example usage: obj.pi_and_v(state) and returns: self,  self