Merge pull request #4927 from ESMCI/jgfouca/fix_py_warn

Change py version warning message from print to warn

Author: jgfouca

CIME/Tools/standard_script_setup.py

@@ -4,7 +4,7 @@
 """
 # pylint: disable=unused-import
 
-import sys, os
+import sys, os, logging
 import __main__ as main
 
 
@@ -31,7 +31,7 @@ def check_minimum_python_version(major, minor, warn_only=False):
         + str(sys.version_info[1])
     )
     if warn_only:
-        print(msg.replace("required", "recommended") + ".")
+        logging.warning(msg.replace("required", "recommended") + ".")
         return
     raise RuntimeError(msg + " - please use a newer version of Python.")
 
@@ -51,4 +51,4 @@ def check_minimum_python_version(major, minor, warn_only=False):
 import CIME.utils
 
 CIME.utils.stop_buffering_output()
-import logging, argparse
+import argparse