问题
I accidentally downloaded Python 3.4.2 a while back but I actually needed Python 2.7, so I deleted the 3.4.2 files and downloaded 2.7 instead. Now I need Python 3, so I tried to download it but I noticed that in the control panel in the Uninstall Programs section it tells me that the 3.4.2 from back then is still on my PC.
Every time I try to uninstall/change/repair/download a newer version I can't and it tells me
A program required to complete the installation can not be found...
I can not find any remaining files connected to any sort of Python in my PC. My operating system is Windows 10. Does someone know how to solve this?
回答1:
Did you try to reinstall the version you want to delete and then uninstall it afterwards ?
回答2:
Try to clean Path in environment variables see here
Just delete the old version path, looks like this: C:\Python27\;
来源：https://stackoverflow.com/questions/32820673/cant-uninstall-python-on-windows-3-4-2