code: def to_etype_name(rating):
      return str(rating).replace(".", "_")
  
file_path: dgl/examples/pytorch/gcmc/utils.py
imports: import csv
  import re
  from collections import OrderedDict
  import numpy
  import torch
  import torch.nn
  import torch.optim
label_desc: Use image node_id 5 for calling a global function with example usage: to_etype_name(rating) and returns: str