Cant get powershell script to run with subprocess

[robertkwild]

hi all,

i can run up a powershell command with subprocess fine but now im trying to get subprocess working with my powershell script but its not passing the variables

heres my py script

import subprocess

un = "username"
op = "oldpassword"
cnp = "newpassword"
dom = "robo84"

subprocess.run(f'powershell.exe C:\\python\\test.ps1' , shell=True)

ps1 script

write-host $un
write-host $op 
write-host $cnp 
write-host $dom

but when i run in cmd, it runs with no errors but i get 4 blank lines

thanks,
rob