python安装时发生严重错误是怎么回事

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查看日志结果如下：(看不懂。。。)

[2874:052C][2018-07-05T22:18:14]e000: Error 0x80070643: Failed to install MSI package.

[2874:052C][2018-07-05T22:18:14]e000: Error 0x80070643: Failed to configure per-user MSI package.

[2874:052C][2018-07-05T22:18:14]i319: Applied execute package: core_JustForMe, result: 0x80070643, restart: None

[2874:052C][2018-07-05T22:18:14]e000: Error 0x80070643: Failed to execute MSI package.

[2874:052C][2018-07-05T22:18:14]i318: Skipped rollback of package: core_JustForMe, action: Uninstall, already: Absent

[2874:052C][2018-07-05T22:18:14]i319: Applied rollback package: core_JustForMe, result: 0x0, restart: None

[2874:052C][2018-07-05T22:18:14]i329: Removed package dependency provider: {F046BD5A-33F4-4ABA-BD2D-0227F6291EC9}, package: core_JustForMe

[2874:052C][2018-07-05T22:18:14]i351: Removing cached package: core_JustForMe, from path: C:\Users\Administrator\AppData\Local\Package Cache\{F046BD5A-33F4-4ABA-BD2D-0227F6291EC9}v3.7.150.0\

[2874:052C][2018-07-05T22:18:14]i329: Removed package dependency provider: {A37820E7-4E89-4B6E-B584-B13E703B26F7}, package: ucrt_JustForMe

[2874:052C][2018-07-05T22:18:14]i372: Session end, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{f684de81-73c2-4924-ad43-e7ae400d47b5}, resume: None, restart: None, disable resume: No

[2874:052C][2018-07-05T22:18:14]i330: Removed bundle dependency provider: CPython-3.7

[2874:052C][2018-07-05T22:18:14]i352: Removing cached bundle: {f684de81-73c2-4924-ad43-e7ae400d47b5}, from path: C:\Users\Administrator\AppData\Local\Package Cache\{f684de81-73c2-4924-ad43-e7ae400d47b5}\

[2874:052C][2018-07-05T22:18:14]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{f684de81-73c2-4924-ad43-e7ae400d47b5}, resume: None, restart initiated: No, disable resume: No

[2874:052C][2018-07-05T22:18:14]i399: Apply complete, result: 0x80070643, restart: None, ba requested restart: No