code: def test_arg_value():
      call = ast_call("MXNet(framework_version='1.6.0')")
      assert "1.6.0" == parsing.arg_value(call, "framework_version")
  
      call = ast_call("MXNet(framework_version=mxnet_version)")
      assert "mxnet_version" == parsing.arg_value(
          call, "framework_version"
      )
  
      call = ast_call("MXNet(instance_count=1)")
      assert 1 == parsing.arg_value(call, "instance_count")
  
      call = ast_call("MXNet(enable_network_isolation=True)")
      assert parsing.arg_value(call, "enable_network_isolation") is True
  
      call = ast_call("MXNet(source_dir=None)")
      assert parsing.arg_value(call, "source_dir") is None
  
imports: from __future__ import absolute_import
  import pytest
  from sagemaker.cli.compatibility.v2.modifiers import parsing
  from tests.unit.sagemaker.cli.compatibility.v2.modifiers.ast_converter import ast_call
label_desc: Use image node_id 3 for calling a global function with example usage: test_arg_value() without return types