perf scripts python: Add Python 3 support to Util.py

Support both Python 2 and Python 3 in Util.py. The dict class no longer
has a ``has_key`` method and print is now a function rather than a
statement. This should have no functional change.

Signed-off-by: Jeremy Cline <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Herton Krzesinski <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/0100016341a730c6-8db8b9b1-da2d-4ee3-96bf-47e0ae9796bd-000000@email.amazonses.com
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: jeremycline

tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py

@@ -5,6 +5,7 @@
 # This software may be distributed under the terms of the GNU General
 # Public License ("GPL") version 2 as published by the Free Software
 # Foundation.
+from __future__ import print_function
 
 import errno, os
 
@@ -33,7 +34,7 @@ def nsecs_str(nsecs):
     return str
 
 def add_stats(dict, key, value):
-	if not dict.has_key(key):
+	if key not in dict:
 		dict[key] = (value, value, value, 1)
 	else:
 		min, max, avg, count = dict[key]
@@ -72,10 +73,10 @@ def clear_term():
 except:
 	if not audit_package_warned:
 		audit_package_warned = True
-		print "Install the audit-libs-python package to get syscall names.\n" \
-                    "For example:\n  # apt-get install python-audit (Ubuntu)" \
-                    "\n  # yum install audit-libs-python (Fedora)" \
-                    "\n  etc.\n"
+		print("Install the audit-libs-python package to get syscall names.\n"
+                    "For example:\n  # apt-get install python-audit (Ubuntu)"
+                    "\n  # yum install audit-libs-python (Fedora)"
+                    "\n  etc.\n")
 
 def syscall_name(id):
 	try: