update and notify about updates

arch_system_upgrade.py

#!/usr/bin/python

from sh import hostname, checkupdates, yay, touch
from tg_bot import send

chatid = '000000000'

updates = checkupdates()

if updates:
    touch('/tmp/system_upgrade.log')
    msg = open('/tmp/system_upgrade.log', 'w')
    touch('/tmp/system_upgrade_stdout.log')
    stdout = open('/tmp/system_upgrade_stdout.log', 'w')
    yay('-Syuq', '--noconfirm', '--noprogressbar', _out=stdout, _err=msg)
    msg.close()
    msg = open('/tmp/system_upgrade.log', 'r')
    send(chatid, 'sendMessage', '*%s*_Upgrading these_\n```\n%s\n%s\n```%s' % (hostname(), updates, msg.read()))