Use Python 3 for launcher

Signed-off-by: Stefan Marr <[email protected]>

Author: smarr

som

@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python3
 import argparse
 import sys
 import os
@@ -208,8 +208,8 @@ if args.use_embedded_graal:
       })
     java_bin = libgraal_jdk_home.strip() + '/bin/java'
   except CalledProcessError as e:
-    print "Failed to determine location of libgraal"
-    print e.output
+    print("Failed to determine location of libgraal")
+    print(e.output)
     sys.exit(1)
 else:
   if JVMCI_BIN:
@@ -454,7 +454,7 @@ flags += ['-Dorg.slf4j.simpleLogger.defaultLogLevel=off']
 all_args = JAVA_ARGS + ['-classpath', classpath, '-Dtruffle.class.path.append=' + classpath] + flags + SOM_ARGS + args.args
 
 if args.verbose:
-    print "CMD: " + java_bin + ' ' + ' '.join(all_args)
+    print("CMD: " + java_bin + ' ' + ' '.join(all_args))
 
 env = dict(os.environ)
 env['JVMCI_VERSION_CHECK'] = 'ignore'