Can I delete Python?
That depends on where Python came from.
If someone installed it deliberately, you can remove it without hurting anything. On Windows, use the Add/Remove Programs icon in the Control Panel.
If Python was installed by a third-party application, you can also remove it, but that application will no longer work. You should probably use that application’s uninstaller rather than removing Python directly.
If Python came with your operating system, removing it is not recommended. If you remove it, whatever tools were written in Python will no longer run, and some of them might be important to you (or the system itself). In worst case, you may have to reinstalling the whole system to repair things.