code: def fn3():
      yield 1
      yield 2
  
file_path: pytorch/test/dynamo/test_nops.py
imports: import torch
  import torch._dynamo.test_case
  import torch._dynamo.testing
  from torch._dynamo import eval_frame
  from torch._dynamo.hooks import Hooks
label_desc: Use image node_id 3 for calling a global function with example usage: fn3() without return types