code: def test_bootstrapping_with_alt_install(self):
      ensurepip.bootstrap(altinstall=True)
      self.assertEqual(
          self.os_environ["ENSUREPIP_OPTIONS"], "altinstall"
      )
  
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 9 for calling the TestBootstrap obj's underlying member method code with example usage: obj.test_bootstrapping_with_alt_install() without return types