Gnome notification for running podman containers

gistfile1.txt

#!env/bin/python

import gi, subprocess, sys
gi.require_version('Notify', '0.7')
from gi.repository import Notify

containers = []
keys=['created','name','image']
pman_out = subprocess.run(["podman","ps","--format",'{{.Created}}|{{.Names}}|{{.Image}}'],capture_output=True)
if pman_out.returncode == 0: 
    if not pman_out.stdout:
        print("No containers are currently running.")
        sys.exit(0)
    containers_inp = pman_out.stdout.decode("utf-8")
    containers_lines = containers_inp.split("\n")
    for line in containers_lines:
        if line:
            container = dict(zip(keys,line.split('|')))
            containers.append(container)
else:
    sys.exit(str(pman_out.stderr.decode("utf-8")))

message = str()
for container in containers:
    message = message + "{name} ({image})\n - Running since {created}\n".format(**container)

Notify.init("Containers")
Notify.Notification.new("Containers are running",message,'dialog-information').show()
Notify.uninit()