code: def forward(self, x):
      b, c, _, _ = x.size()
      y = self.avg_pool(x).view(b, c)
      y = self.fc(y).view(b, c, 1, 1)
      return x * y.expand_as(x)
  
imports: import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 2 for calling the SEModule obj's underlying member method code with example usage: obj.forward(x) and returns: unknown