code: def test_initialize_outputscale(self):
      kernel = ScaleKernel(RBFKernel())
      kernel.initialize(outputscale=3.14)
      actual_value = torch.tensor(3.14).view_as(kernel.outputscale)
      self.assertLess(
          torch.norm(kernel.outputscale - actual_value), 1e-5
      )
  
imports: import pickle
  import unittest
  import torch
  from gpytorch.kernels import LinearKernel, RBFKernel, ScaleKernel
  from gpytorch.priors import NormalPrior
  from gpytorch.test.base_kernel_test_case import BaseKernelTestCase
label_desc: Use image node_id 5 for calling the TestScaleKernel obj's underlying member method code with example usage: obj.test_initialize_outputscale() without return types