#.foo.ps1
[String]$UserName = $args[0]
[String]$Password = $args[1]
[String[]] $ComputerName = $args[2]
[String[]] $Users = $args[3]
Write-Output "Username is $UserName"
Write-Output "Password is $Password"
foreach ($Computer in $ComputerName) {
   Write-Output "Computer is $Computer"
}

foreach ($User in $Users) {
   Write-Output "Users is $User"
}

PS dir>powershell -executionpolicy bypass -Command .foo.ps1 "my_username" "my_password" "Computer1, Computer2" "User1, User2"

import subprocess
process = subprocess.Popen(['powershell.exe',"""powershell -executionpolicy bypass -File Foo.ps1 "username" "password" "computer1,computer2" "user1,user2" """], stdin=subprocess.PIPE,stdout=subprocess.PIPE)
print(process.communicate())