scons: Switch from the print statement to the print function.

Starting with version 3, scons imposes using the print function instead
of the print statement in code it processes. To get things building
again, this change moves all python code within gem5 to use the
function version. Another change by another author separately made this
same change to the site_tools and site_init.py files.

Change-Id: I2de7dc3b1be756baad6f60574c47c8b7e80ea3b0
Reviewed-on: https://gem5-review.googlesource.com/8761
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Gabe Black <gabeblack@google.com>

1 files changed, 42 insertions, 40 deletions

diff --git a/src/python/m5/main.py b/src/python/m5/main.py
index ad452886a..9d46d4331 100644
--- a/src/python/m5/main.py
+++ b/src/python/m5/main.py
@@ -38,6 +38,8 @@
 #
 # Authors: Nathan Binkert
 
+from __future__ import print_function
+
 import code
 import datetime
 import os
@@ -230,12 +232,12 @@ def main(*args):
 
     # Print redirection notices here before doing any redirection
     if options.redirect_stdout and not options.redirect_stderr:
-        print "Redirecting stdout and stderr to", stdout_file
+        print("Redirecting stdout and stderr to", stdout_file)
     else:
         if options.redirect_stdout:
-            print "Redirecting stdout to", stdout_file
+            print("Redirecting stdout to", stdout_file)
         if options.redirect_stderr:
-            print "Redirecting stderr to", stderr_file
+            print("Redirecting stderr to", stderr_file)
 
     # Now redirect stdout/stderr as desired
     if options.redirect_stdout:
@@ -252,28 +254,28 @@ def main(*args):
 
     if options.build_info:
         done = True
-        print 'Build information:'
-        print
-        print 'compiled %s' % defines.compileDate;
-        print 'build options:'
+        print('Build information:')
+        print()
+        print('compiled %s' % defines.compileDate)
+        print('build options:')
         keys = defines.buildEnv.keys()
         keys.sort()
         for key in keys:
             val = defines.buildEnv[key]
-            print '    %s = %s' % (key, val)
-        print
+            print('    %s = %s' % (key, val))
+        print()
 
     if options.copyright:
         done = True
-        print info.COPYING
-        print
+        print(info.COPYING)
+        print()
 
     if options.readme:
         done = True
-        print 'Readme:'
-        print
-        print info.README
-        print
+        print('Readme:')
+        print()
+        print(info.README)
+        print()
 
     if options.debug_help:
         done = True
@@ -283,23 +285,23 @@ def main(*args):
     if options.list_sim_objects:
         import SimObject
         done = True
-        print "SimObjects:"
+        print("SimObjects:")
         objects = SimObject.allClasses.keys()
         objects.sort()
         for name in objects:
             obj = SimObject.allClasses[name]
-            print "    %s" % obj
+            print("    %s" % obj)
             params = obj._params.keys()
             params.sort()
             for pname in params:
                 param = obj._params[pname]
                 default = getattr(param, 'default', '')
-                print "        %s" % pname
+                print("        %s" % pname)
                 if default:
-                    print "            default: %s" % default
-                print "            desc: %s" % param.desc
-                print
-            print
+                    print("            default: %s" % default)
+                print("            desc: %s" % param.desc)
+                print()
+            print()
 
     if done:
         sys.exit(0)
@@ -310,26 +312,26 @@ def main(*args):
 
     verbose = options.verbose - options.quiet
     if verbose >= 0:
-        print "gem5 Simulator System.  http://gem5.org"
-        print brief_copyright
-        print
+        print("gem5 Simulator System.  http://gem5.org")
+        print(brief_copyright)
+        print()
 
-        print "gem5 compiled %s" % defines.compileDate;
+        print("gem5 compiled %s" % defines.compileDate)
 
-        print "gem5 started %s" % \
-            datetime.datetime.now().strftime("%b %e %Y %X")
-        print "gem5 executing on %s, pid %d" % \
-            (socket.gethostname(), os.getpid())
+        print("gem5 started %s" %
+              datetime.datetime.now().strftime("%b %e %Y %X"))
+        print("gem5 executing on %s, pid %d" %
+              (socket.gethostname(), os.getpid()))
 
         # in Python 3 pipes.quote() is moved to shlex.quote()
         import pipes
-        print "command line:", " ".join(map(pipes.quote, sys.argv))
-        print
+        print("command line:", " ".join(map(pipes.quote, sys.argv)))
+        print()
 
     # check to make sure we can find the listed script
     if not arguments or not os.path.isfile(arguments[0]):
         if arguments and not os.path.isfile(arguments[0]):
-            print "Script %s not found" % arguments[0]
+            print("Script %s not found" % arguments[0])
 
         options.usage(2)
 
@@ -375,7 +377,7 @@ def main(*args):
                 off = True
 
             if flag not in debug.flags:
-                print >>sys.stderr, "invalid debug flag '%s'" % flag
+                print("invalid debug flag '%s'" % flag, file=sys.stderr)
                 sys.exit(1)
 
             if off:
@@ -420,11 +422,11 @@ def main(*args):
         try:
             pdb.run(filecode, scope)
         except SystemExit:
-            print "The program exited via sys.exit(). Exit status: ",
-            print sys.exc_info()[1]
+            print("The program exited via sys.exit(). Exit status: ", end=' ')
+            print(sys.exc_info()[1])
         except:
             traceback.print_exc()
-            print "Uncaught exception. Entering post mortem debugging"
+            print("Uncaught exception. Entering post mortem debugging")
             t = sys.exc_info()[2]
             while t.tb_next is not None:
                 t = t.tb_next
@@ -441,9 +443,9 @@ if __name__ == '__main__':
 
     options, arguments = parse_options()
 
-    print 'opts:'
+    print('opts:')
     pprint(options, indent=4)
-    print
+    print()
 
-    print 'args:'
+    print('args:')
     pprint(arguments, indent=4)