Add python version checks and 3.4 example

1 files changed, 5 insertions, 0 deletions

diff --git a/contrib/zmq/zmq_sub.py b/contrib/zmq/zmq_sub.py
index e462198bfe..4839f401b1 100755
--- a/contrib/zmq/zmq_sub.py
+++ b/contrib/zmq/zmq_sub.py
@@ -11,6 +11,11 @@ import binascii
 import asyncio, zmq, zmq.asyncio
 import signal
 import struct
+import sys
+
+if not (sys.version_info.major >= 3 and sys.version_info.minor >= 5):
+    print("This example only works with Python 3.5 and greater")
+    exit(1)
 
 port = 28332