old_contents: import unittest
  
  import time
  
  import jax.numpy as np
  from jax import grad, jit
  
  
  class TestJAX(unittest.TestCase):
      def tanh(self, x):
          y = np.exp(-2.0 * x)
          return (1.0 - y) / (1.0 + y)
  
      @gpu_test
      def test_JAX(self):
          grad_tanh = grad(self.tanh)
          ag = grad_tanh(1.0)
          print(f'JAX autograd test: {ag}')
          assert ag==0.4199743
  
new_contents: import unittest
  
  import time
  
  
  class TestJAX(unittest.TestCase):
      def tanh(self, x):
          y = np.exp(-2.0 * x)
          return (1.0 - y) / (1.0 + y)
  
      @gpu_test
      def test_JAX(self):
          # importing inside the gpu-only test because these packages can't be
          # imported on the CPU image since they are not present there.
          import jax.numpy as np
          from jax import grad, jit
  
          grad_tanh = grad(self.tanh)
          ag = grad_tanh(1.0)
          print(f'JAX autograd test: {ag}')
          assert ag==0.4199743
  
subject: move import statement inside gpu test