code: def dot_dist(x, y, pw=False):
      if pw is False:
          x = x.unsqueeze(1)
          y = y.unsqueeze(0)
  
      return th.sum(x * y, dim=-1)
  
imports: import os
  import numpy
  import torch
  import torch.nn
  import torch.nn.functional
  import torch.nn.init
  import torch.multiprocessing
  from torch.multiprocessing import Queue
  from _thread import start_new_thread
  import traceback
  from functools import wraps
  from ..None import *
label_desc: Use image node_id 7 for calling a global function with example usage: dot_dist(x, y, pw) and returns: th