Add show_admins management command.

(imported from commit f16e118fa5203408b99f0a41ff7cecbffb821fa7)

zerver/management/commands/show_admins.py

@@ -0,0 +1,35 @@
+from __future__ import absolute_import
+
+from django.core.management.base import BaseCommand
+from zerver.models import Realm
+import sys
+
+class Command(BaseCommand):
+    help = """Show the admins in a realm.
+
+Usage: ./manage.py show_admins <realm name>
+"""
+
+    def handle(self, *args, **options):
+        try:
+            realm = args[0]
+        except IndexError:
+            print 'Please specify a realm.'
+            sys.exit(1)
+
+        try:
+            realm = Realm.objects.get(domain=realm)
+        except Realm.DoesNotExist:
+            print 'There is no realm called %s.' % (realm,)
+            sys.exit(1)
+
+        users = realm.get_admin_users()
+
+        if users:
+            print 'Admins:\n'
+            for user in users:
+                print '  %s (%s)' % (user.email, user.full_name)
+        else:
+            print 'There are no admins for this realm!'
+
+        print '\nYou can use the "knight" management command to knight admins.'