1.打开下载好的Python安装包，点击继续

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2.阅读当前版本信息，点击继续即可

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3.阅读且同意安装协议，点击继续

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4.可自定义Python安装路径与插件，默认安装即可

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5. 安装完成，点击关闭

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6. 验证安装

由于我的电脑是不需要做多版本共存配置的因此这里不忽略，可参考Windows下的多版本共存

  1. codeersdeMacBook-Pro:~ codeers$ python3.8
  2. Python 3.8.2 (v3.8.2:7b3ab5921f, Feb 24 2020, 17:52:18) 
  3. [Clang 6.0 (clang-600.0.57)] on darwin
  4. Type "help", "copyright", "credits" or "license" for more information.
  5. >>> exit()
  6. codeersdeMacBook-Pro:~ codeers$ python3.7
  7. Python 3.7.6 (v3.7.6:43364a7ae0, Dec 18 2019, 14:18:50) 
  8. [Clang 6.0 (clang-600.0.57)] on darwin
  9. Type "help", "copyright", "credits" or "license" for more information.
  10. >>> exit()