Unable to unistall python 3.5 on windows

I am trying to uninstall windows 64 bit python version on my Win7 laptop but unable to do so.

It detects an installed version so it provides the option to modify, repair or uninstall. But on initializing uninstall it says "No Python 3.5 installation was detected".

I have tried doing a repair and then uninstall but to no avail. I have also tried several solutions mentioned online but nothing works.

Following is the log:

[0130:32A4][2018-08-28T12:57:42]i360: Creating a system restore point.
[0130:32A4][2018-08-28T12:57:54]i361: Created a system restore point.
[410C:17CC][2018-08-28T12:57:54]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{e599f76f-2b95-44da-a280-77548b1b2a21}, resume: Active, restart initiated: No, disable resume: No
[410C:17CC][2018-08-28T12:57:54]i329: Removed package dependency provider: {810503AC-4E50-4A21-BD5A-BFA973480B35}, package: path_JustForMe
[410C:17CC][2018-08-28T12:57:54]i326: Removed dependency: {e599f76f-2b95-44da-a280-77548b1b2a21} on package provider: {6ADAF31E-EEE6-4251-BE5A-EFD7868D3930}, package pip_JustForMe
[410C:17CC][2018-08-28T12:57:54]i329: Removed package dependency provider: {6ADAF31E-EEE6-4251-BE5A-EFD7868D3930}, package: pip_JustForMe
[410C:17CC][2018-08-28T12:57:54]i301: Applying execute package: pip_JustForMe, action: Uninstall, path: (null), arguments: ' ARPSYSTEMCOMPONENT="1" MSIFASTINSTALL="7" TARGETDIR="C:\Users\gjoshi\AppData\Local\Programs\Python\Python35\" OPTIONALFEATURESREGISTRYKEY="Software\Python\PythonCore\3.5\InstalledFeatures"'
[410C:17CC][2018-08-28T12:57:58]e000: Error 0x80070643: Failed to uninstall MSI package.
[410C:17CC][2018-08-28T12:57:58]e000: Error 0x80070643: Failed to configure per-user MSI package.
[410C:17CC][2018-08-28T12:57:58]i319: Applied execute package: pip_JustForMe, result: 0x80070643, restart: None
[410C:17CC][2018-08-28T12:57:58]e000: Error 0x80070643: Failed to execute MSI package.
[410C:17CC][2018-08-28T12:57:58]i318: Skipped rollback of package: pip_JustForMe, action: Install, already: Present
[410C:17CC][2018-08-28T12:57:58]i319: Applied rollback package: pip_JustForMe, result: 0x0, restart: None
[410C:17CC][2018-08-28T12:57:58]i323: Registering package dependency provider: {6ADAF31E-EEE6-4251-BE5A-EFD7868D3930}, version: 3.5.150.0, package: pip_JustForMe
[410C:17CC][2018-08-28T12:57:58]i325: Registering dependency: {e599f76f-2b95-44da-a280-77548b1b2a21} on package provider: {6ADAF31E-EEE6-4251-BE5A-EFD7868D3930}, package: pip_JustForMe
[410C:17CC][2018-08-28T12:57:58]i372: Session end, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{e599f76f-2b95-44da-a280-77548b1b2a21}, resume: ARP, restart: None, disable resume: No
[410C:17CC][2018-08-28T12:57:58]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{e599f76f-2b95-44da-a280-77548b1b2a21}, resume: ARP, restart initiated: No, disable resume: No
[410C:17CC][2018-08-28T12:57:58]i399: Apply complete, result: 0x80070643, restart: None, ba requested restart:  No

The solution that worked was clicking repair from the installer and let it fail. After it failed, I uninstalled it and re-installed it and it worked fine.

All steps done through the standard installer.