code: def test_uninstall_skipped_with_warning_for_wrong_version(self):
      with fake_pip("not a valid version"):
          with test.support.captured_stderr() as stderr:
              ensurepip._uninstall_helper()
      warning = stderr.getvalue().strip()
      self.assertIn("only uninstall a matching version", warning)
      self.assertFalse(self.run_pip.called)
  
imports: import contextlib
  import os
  import os.path
  import sys
  import tempfile
  import test.support
  import unittest
  import unittest.mock
  import ensurepip
  import ensurepip._uninstall
label_desc: Use image node_id 2 for calling the TestUninstall obj's underlying member method code with example usage: obj.test_uninstall_skipped_with_warning_for_wrong_version() without return types