问在Python3.8(64位Windows)上安装PyAutoGUI时出现问题

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ERROR: Command errored out with exit status 1:
       command: 'C:\Program Files\Python38\python.exe' 'C:\Users\HP\AppData\Roaming\Python\Python38\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\HP\AppData\Local\Temp\pip-build-env-j7d0dtw8\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- 'setuptools>=40.8.0' wheel
           cwd: None
      Complete output (14 lines):
      Traceback (most recent call last):
        File "C:\Program Files\Python38\lib\runpy.py", line 194, in _run_module_as_main
          return _run_code(code, main_globals, None,
        File "C:\Program Files\Python38\lib\runpy.py", line 87, in _run_code
          exec(code, run_globals)
        File "C:\Users\HP\AppData\Roaming\Python\Python38\site-packages\pip\__main__.py", line 23, in <module>
          from pip._internal.cli.main import main as _main  # isort:skip # noqa
        File "C:\Users\HP\AppData\Roaming\Python\Python38\site-packages\pip\_internal\cli\main.py", line 5, in <module>
          import locale
        File "C:\Program Files\Python38\lib\locale.py", line 16, in <module>
          import re
        File "C:\Program Files\Python38\lib\re.py", line 145, in <module>
          class RegexFlag(enum.IntFlag):
      AttributeError: module 'enum' has no attribute 'IntFlag'
      ----------------------------------------
    ERROR: Command errored out with exit status 1: 'C:\Program Files\Python38\python.exe' 'C:\Users\HP\AppData\Roaming\Python\Python38\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\HP\AppData\Local\Temp\pip-build-env-j7d0dtw8\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- 'setuptools>=40.8.0' wheel Check the logs for full command output.