Use print as a function for Python 3 [PEP 3105]

Import print_function from the __future__ module
to activate this for Python 2.  This works as far back as Python 2.6.0a2:
   https://docs.python.org/2/library/__future__.html

[PEP 3105] https://www.python.org/dev/peps/pep-3105/

1 files changed, 1 insertions, 0 deletions

diff --git a/tools/regression/netinet/ip_id_period/ip_id_period.py b/tools/regression/netinet/ip_id_period/ip_id_period.py
index ba843216557f..c04f5a4b133b 100644
--- a/tools/regression/netinet/ip_id_period/ip_id_period.py
+++ b/tools/regression/netinet/ip_id_period/ip_id_period.py
@@ -27,6 +27,7 @@
 # code.  It will push 200000 packets, then report back what the min and max
 # periods it saw for different IDs were.
 
+from __future__ import print_function
 import os
 import signal
 import subprocess