--- python/samba/netcmd/visualize.py.orig 2018-03-15 15:40:01.000000000 +0300
+++ python/samba/netcmd/visualize.py  2018-03-15 15:40:27.000000000 +0300
@@ -176,7 +176,7 @@
         "DNSDOMAIN": "DC=DomainDnsZones,%s" % base_dn,
         "DNSFOREST": "DC=ForestDnsZones,%s" % base_dn
     }
-    long_to_short = {v: k for k, v in short_to_long.iteritems()}
+    long_to_short = dict((v, k) for k, v in short_to_long.iteritems())
     return short_to_long, long_to_short