make print output be python2 and python3 compatible.

tests/pytest/util/log.py

@@ -15,6 +15,7 @@ import sys
 import os
 import time
 import datetime
+from distutils.log import warn as printf
 
 
 class TDLog:
@@ -22,27 +23,27 @@ class TDLog:
         self.path = ""
 
     def info(self, info):
-        print("%s %s" % (datetime.datetime.now(), info))
+        printf("%s %s" % (datetime.datetime.now(), info))
 
     def sleep(self, sec):
-        print("%s sleep %d seconds" % (datetime.datetime.now(), sec))
+        printf("%s sleep %d seconds" % (datetime.datetime.now(), sec))
         time.sleep(sec)
 
     def debug(self, err):
-        print("\033[1;36m%s %s\033[0m" % (datetime.datetime.now(), err))
+        printf("\033[1;36m%s %s\033[0m" % (datetime.datetime.now(), err))
 
     def success(self, info):
-        print("\033[1;32m%s %s\033[0m" % (datetime.datetime.now(), info))
+        printf("\033[1;32m%s %s\033[0m" % (datetime.datetime.now(), info))
 
     def notice(self, err):
-        print("\033[1;33m%s %s\033[0m" % (datetime.datetime.now(), err))
+        printf("\033[1;33m%s %s\033[0m" % (datetime.datetime.now(), err))
 
     def exit(self, err):
-        print("\033[1;31m%s %s\033[0m" % (datetime.datetime.now(), err))
+        printf("\033[1;31m%s %s\033[0m" % (datetime.datetime.now(), err))
         sys.exit(1)
 
-    def printNoPrefix(self, info):
-        print("\033[1;36m%s\033[0m" % (info))
+    def printfNoPrefix(self, info):
+        printf("\033[1;36m%s\033[0m" % (info))
 
 
 tdLog = TDLog()