Provide examples for python podman API

Signed-off-by: Jhon Honce <jhonce@redhat.com>

Closes: #870
Approved by: rhatdan

contrib/python/examples/eg_latest_containers.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+"""Example: Show all containers created since midnight."""
+
+from datetime import datetime, time, timezone
+
+import podman
+
+print('{}\n'.format(__doc__))
+
+
+midnight = datetime.combine(datetime.today(), time.min, tzinfo=timezone.utc)
+
+with podman.Client() as client:
+    for c in client.containers.list():
+        created_at = podman.datetime_parse(c.createdat)
+
+        if created_at > midnight:
+            print('{}: image: {} createdAt: {}'.format(
+                c.id[:12], c.image[:32], podman.datetime_format(created_at)))