Url = r"https://download.visualstudio.microsoft.com/download/pr/907765b0-2bf8-494e-93aa-5ef9553c5d68/a9308dc010617e6716c0e6abd53b05ce/windowsdesktop-runtime-8.0.8-win-x64.exe"
fileName = r"windowsdesktop-runtime-8.0.8-win-x64.exe"

import os
import ctypes
import urllib2
import ssl

class disable_file_system_redirection:
    _disable = ctypes.windll.kernel32.Wow64DisableWow64FsRedirection
    _revert = ctypes.windll.kernel32.Wow64RevertWow64FsRedirection
    def __enter__(self):
        self.old_value = ctypes.c_long()
        self.success = self._disable(ctypes.byref(self.old_value))
    def __exit__(self, type, value, traceback):
        if self.success:
            self._revert(self.old_value)

Down_path=os.environ['TEMP']
DownTo = os.path.join(Down_path, fileName)

def ecmd(command):   
    from subprocess import Popen, PIPE
    import ctypes
    
    with disable_file_system_redirection():
        obj = Popen(command, shell = True, stdout = PIPE, stderr = PIPE)
    out, err = obj.communicate()
    ret=obj.returncode
    return ret,out,err
            
def downloadFile(DownTo, fromURL):
    headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36'}
    context = ssl._create_unverified_context()
    request = urllib2.Request(fromURL, headers=headers)
    req = urllib2.urlopen(request,context=context)
    try:
        with open(DownTo, 'wb') as f:
            while True:
                chunk = req.read(100*1000*1000)
                if chunk:
                    f.write(chunk)
                else:
                    break
        if os.path.isfile(DownTo):
            return '{} - {}KB'.format(DownTo, os.path.getsize(DownTo)/1024)
		
    except:
        return 'Please Check URL or Download Path!'

def install():
    with disable_file_system_redirection():
        app_list = os.popen("wmic product get name").read()
        if "Microsoft .NET Host - 8.0.8" in app_list:
            print("Microsoft .NET 8.0.8 is already installed on this system")
        else:
            print(downloadFile(DownTo, Url))
            ret,output,error = ecmd('"%s" /q /norestart'%(DownTo))
            if ret == 0:
                print("Successfully installed the application")
                print(output)
            else:
                if error:
                    print("An error occurred:\n%s"%(error))
                else:
                    print("Something went wrong while installing the application")
                    print("Return Code: %s"%(ret))
            os.remove(DownTo)
install()