code: def test_altinstall_default_pip_conflict(self):
      with self.assertRaises(ValueError):
          ensurepip.bootstrap(altinstall=True, default_pip=True)
      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 11 for calling the TestBootstrap obj's underlying member method code with example usage: obj.test_altinstall_default_pip_conflict() without return types