我试图安装一些库来在我的python 3.4上使用，但是每次我运行pip install（“name of library”）时，它都返回以下错误：

Collecting pyautogui
  Using cached https://files.pythonhosted.org/packages/35/71/a7d328fe19667777fb0c371ca346c89d1b380f7778fa1ba65aca1090478c/PyAutoGUI-0.9.49.tar.gz
  Exception:
  Traceback (most recent call last):
    File "C:\Python34\lib\site-packages\pip\basecommand.py", line 232, in main
      status = self.run(options, args)
    File "C:\Python34\lib\site-packages\pip\commands\install.py", line 339, in run
      requirement_set.prepare_files(finder)
    File "C:\Python34\lib\site-packages\pip\req\req_set.py", line 385, in prepare_files
      req_to_install.run_egg_info()
    File "C:\Python34\lib\site-packages\pip\req\req_install.py", line 310, in run_egg_info
      self.setup_py, self.name,
    File "C:\Python34\lib\site-packages\pip\req\req_install.py", line 281, in setup_py
      import setuptools  # noqa
    File "C:\Python34\lib\site-packages\setuptools\__init__.py", line 17, in <module>
      import setuptools.version
    File "C:\Python34\lib\site-packages\setuptools\version.py", line 1, in <module>
      import pkg_resources
    File "C:\Python34\lib\site-packages\pkg_resources\__init__.py", line 93, in <module>
      raise RuntimeError("Python 3.5 or later is required")
  RuntimeError: Python 3.5 or later is required