code: def test_module_attribute_mutation_violation_positive_2(self):
      # Mutating attribute with a scalar type
      class Foo(torch.nn.Module):
          def __init__(self):
              super().__init__()
              self.a = 2
  
          def forward(self, x):
              self.a = self.a * 3
              return x.sum() + self.a
  
      self.check_failure_on_export(Foo(), torch.Tensor(3, 2))
  
file_path: pytorch/test/dynamo/test_export_mutations.py
imports: import unittest
  import torch
  import torch._dynamo.test_case
  import torch._dynamo.testing
  from torch.testing._internal.common_utils import IS_FBCODE
label_desc: Use image node_id 4 for calling the MutationExportTests obj's underlying member method code with example usage: obj.test_module_attribute_mutation_violation_positive_2() and returns: unknown