code: def install(packages, upgrade=False, use_sudo=False, python_cmd='python'):
      
      argv = []
      if upgrade:
          argv.append("-U")
      if isinstance(packages, six.string_types):
          argv.append(packages)
      else:
          argv.extend(packages)
      _easy_install(argv, python_cmd, use_sudo)
docs: Install Python packages with ``easy_install``.
  
      Examples::
  
          import burlap
  
          # Install a single package
          burlap.python_setuptools.install('package', use_sudo=True)
  
          # Install a list of packages
          burlap.python_setuptools.install(['pkg1', 'pkg2'], use_sudo=True)
  
      .. note:: most of the time, you'll want to use
                :py:func:`burlap.python.install()` instead,
                which uses ``pip`` to install packages.