Portable Python script across Python version

Using from __future__ import print_function it is possible to have a compatible behavior of `print(...)` across Python version.

Differential Revision: https://reviews.llvm.org/D55213

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@349454 91177308-0d34-0410-b5e6-96231b3b80d8

21 files changed, 184 insertions, 164 deletions

diff --git a/bindings/python/clang/cindex.py b/bindings/python/clang/cindex.py
index 72e8fdb8a8..5dbe809af9 100644
--- a/bindings/python/clang/cindex.py
+++ b/bindings/python/clang/cindex.py
@@ -44,6 +44,7 @@ The major indexing objects are:
 Most object information is exposed using properties, when the underlying API
 call is efficient.
 """
+from __future__ import print_function
 
 # TODO
 # ====
diff --git a/docs/conf.py b/docs/conf.py
index dc69f8a848..a18ce3a304 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -11,6 +11,7 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
+from __future__ import print_function
 import sys, os
 from datetime import date
 
@@ -233,14 +234,14 @@ for name in os.listdir(command_guide_path):
         header = f.readline().rstrip('\n')
 
         if len(header) != len(title):
-            print >>sys.stderr, (
+            print((
                 "error: invalid header in %r (does not match title)" % (
-                    file_subpath,))
+                    file_subpath,)), file=sys.stderr)
         if ' - ' not in title:
-            print >>sys.stderr, (
+            print((
                 ("error: invalid title in %r "
                  "(expected '<name> - <description>')") % (
-                    file_subpath,))
+                    file_subpath,)), file=sys.stderr)
 
         # Split the name out of the title.
         name,description = title.split(' - ', 1)
diff --git a/docs/tools/dump_ast_matchers.py b/docs/tools/dump_ast_matchers.py
index 2c0cbafa8a..cae27b20a9 100755
--- a/docs/tools/dump_ast_matchers.py
+++ b/docs/tools/dump_ast_matchers.py
@@ -41,7 +41,7 @@ def esc(text):
     url = 'https://clang.llvm.org/doxygen/classclang_1_1%s.html' % name
     if url not in doxygen_probes:
       try:
-        print 'Probing %s...' % url
+        print('Probing %s...' % url)
         urllib2.urlopen(url)
         doxygen_probes[url] = True
       except:
@@ -307,14 +307,14 @@ def act_on_decl(declaration, comment, allowed_types):
       if not result_types:
         if not comment:
           # Only overloads don't have their own doxygen comments; ignore those.
-          print 'Ignoring "%s"' % name
+          print('Ignoring "%s"' % name)
         else:
-          print 'Cannot determine result type for "%s"' % name
+          print('Cannot determine result type for "%s"' % name)
       else:
         for result_type in result_types:
           add_matcher(result_type, name, args, comment)
     else:
-      print '*** Unparsable: "' + declaration + '" ***'
+      print('*** Unparsable: "' + declaration + '" ***')
 
 def sort_table(matcher_type, matcher_map):
   """Returns the sorted html table for the given row map."""
diff --git a/tools/clang-format/clang-format-diff.py b/tools/clang-format/clang-format-diff.py
index ce4c1d6e0a..1721d8a430 100755
--- a/tools/clang-format/clang-format-diff.py
+++ b/tools/clang-format/clang-format-diff.py
@@ -21,6 +21,7 @@ Example usage for git/svn users:
   svn diff --diff-cmd=diff -x-U0 | clang-format-diff.py -i
 
 """
+from __future__ import print_function
 
 import argparse
 import difflib
diff --git a/tools/scan-build-py/libscanbuild/arguments.py b/tools/scan-build-py/libscanbuild/arguments.py
index a5d0c6bda6..73a7f24e67 100644
--- a/tools/scan-build-py/libscanbuild/arguments.py
+++ b/tools/scan-build-py/libscanbuild/arguments.py
@@ -12,6 +12,7 @@ earlier.)
 It also implements basic validation methods, related to the command.
 Validations are mostly calling specific help methods, or mangling values.
 """
+from __future__ import print_function
 
 import os
 import sys
diff --git a/tools/scan-view/bin/scan-view b/tools/scan-view/bin/scan-view
index 6e384ec217..e3abb1c834 100755
--- a/tools/scan-view/bin/scan-view
+++ b/tools/scan-view/bin/scan-view
@@ -1,5 +1,7 @@
 #!/usr/bin/env python
 
+from __future__ import print_function
+
 """The clang static analyzer results viewer.
 """
 
@@ -52,10 +54,10 @@ def start_browser(port, options):
             sys.stderr.flush()
         time.sleep(kSleepTimeout)
     else:
-        print >> sys.stderr, 'WARNING: Unable to detect that server started.'
+        print('WARNING: Unable to detect that server started.', file=sys.stderr) 
 
     if options.debug:
-        print >> sys.stderr, '%s: Starting webbrowser...' % sys.argv[0]
+        print('%s: Starting webbrowser...' % sys.argv[0], file=sys.stderr)
     webbrowser.open(url)
 
 
@@ -69,9 +71,9 @@ def run(port, options, root):
 
     import ScanView
     try:
-        print 'Starting scan-view at: http://%s:%d' % (options.host,
-                                                       port)
-        print '  Use Ctrl-C to exit.'
+        print('Starting scan-view at: http://%s:%d' % (options.host,
+                                                       port))
+        print('  Use Ctrl-C to exit.')
         httpd = ScanView.create_server((options.host, port),
                                        options, root)
         httpd.serve_forever()
diff --git a/tools/scan-view/share/ScanView.py b/tools/scan-view/share/ScanView.py
index b465c971db..b1ce8c3d3a 100644
--- a/tools/scan-view/share/ScanView.py
+++ b/tools/scan-view/share/ScanView.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 try:
     from http.server import HTTPServer, SimpleHTTPRequestHandler
 except ImportError:
@@ -102,20 +103,20 @@ class ReporterThread(threading.Thread):
         result = None
         try:
             if self.server.options.debug:
-                print >>sys.stderr, "%s: SERVER: submitting bug."%(sys.argv[0],)
+                print("%s: SERVER: submitting bug."%(sys.argv[0],), file=sys.stderr)
             self.status = self.reporter.fileReport(self.report, self.parameters)
             self.success = True
             time.sleep(3)
             if self.server.options.debug:
-                print >>sys.stderr, "%s: SERVER: submission complete."%(sys.argv[0],)
+                print("%s: SERVER: submission complete."%(sys.argv[0],), file=sys.stderr)
         except Reporter.ReportFailure as e:
             self.status = e.value
         except Exception as e:
             s = StringIO.StringIO()
             import traceback
-            print >>s,'<b>Unhandled Exception</b><br><pre>'
-            traceback.print_exc(e,file=s)
-            print >>s,'</pre>'
+            print('<b>Unhandled Exception</b><br><pre>', file=s)
+            traceback.print_exc(file=s)
+            print('</pre>', file=s)
             self.status = s.getvalue()
 
 class ScanViewServer(HTTPServer):
@@ -161,16 +162,16 @@ class ScanViewServer(HTTPServer):
     def halt(self):
         self.halted = True
         if self.options.debug:
-            print >>sys.stderr, "%s: SERVER: halting." % (sys.argv[0],)
+            print("%s: SERVER: halting." % (sys.argv[0],), file=sys.stderr)
 
     def serve_forever(self):
         while not self.halted:
             if self.options.debug > 1:
-                print >>sys.stderr, "%s: SERVER: waiting..." % (sys.argv[0],)
+                print("%s: SERVER: waiting..." % (sys.argv[0],), file=sys.stderr)
             try:
                 self.handle_request()
             except OSError as e:
-                print 'OSError',e.errno
+                print('OSError',e.errno)
 
     def finish_request(self, request, client_address):
         if self.options.autoReload:
@@ -183,7 +184,7 @@ class ScanViewServer(HTTPServer):
         info = sys.exc_info()
         if info and isinstance(info[1], socket.error):
             if self.options.debug > 1:
-                print >>sys.stderr, "%s: SERVER: ignored socket error." % (sys.argv[0],)
+                print("%s: SERVER: ignored socket error." % (sys.argv[0],), file=sys.stderr)
             return
         HTTPServer.handle_error(self, request, client_address)
 
@@ -270,8 +271,8 @@ class ScanViewRequestHandler(SimpleHTTPRequestHandler):
     def handle_exception(self, exc):
         import traceback
         s = StringIO.StringIO()
-        print >>s, "INTERNAL ERROR\n"
-        traceback.print_exc(exc, s)
+        print("INTERNAL ERROR\n", file=s)
+        traceback.print_exc(file=s)
         f = self.send_string(s.getvalue(), 'text/plain')
         if f:
             self.copyfile(f, self.wfile)
@@ -416,8 +417,8 @@ Submit</h3>
 
         import startfile
         if self.server.options.debug:
-            print >>sys.stderr, '%s: SERVER: opening "%s"'%(sys.argv[0],
-                                                            file)
+            print('%s: SERVER: opening "%s"'%(sys.argv[0],
+                                                            file), file=sys.stderr)
 
         status = startfile.open(file)
         if status:
@@ -696,8 +697,8 @@ File Bug</h3>
         path = posixpath.join(self.server.root, relpath)
 
         if self.server.options.debug > 1:
-            print >>sys.stderr, '%s: SERVER: sending path "%s"'%(sys.argv[0],
-                                                                 path)
+            print('%s: SERVER: sending path "%s"'%(sys.argv[0],
+                                                                 path), file=sys.stderr)
         return self.send_path(path)
 
     def send_404(self):
diff --git a/utils/ABITest/ABITestGen.py b/utils/ABITest/ABITestGen.py
index 0e588f056c..d42e08e123 100755
--- a/utils/ABITest/ABITestGen.py
+++ b/utils/ABITest/ABITestGen.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 
+from __future__ import print_function
 from pprint import pprint
 import random, atexit, time
 from random import randrange
@@ -28,42 +29,42 @@ class TypePrinter(object):
         if info:
             for f in (self.output,self.outputHeader,self.outputTests,self.outputDriver):
                 if f:
-                    print >>f,info
+                    print(info, file=f)
 
         if self.writeBody:
-            print >>self.output, '#include <stdio.h>\n'
+            print('#include <stdio.h>\n', file=self.output)
             if self.outputTests:
-                print >>self.outputTests, '#include <stdio.h>'
-                print >>self.outputTests, '#include <string.h>'
-                print >>self.outputTests, '#include <assert.h>\n'
+                print('#include <stdio.h>', file=self.outputTests)
+                print('#include <string.h>', file=self.outputTests)
+                print('#include <assert.h>\n', file=self.outputTests)
 
         if headerName:
             for f in (self.output,self.outputTests,self.outputDriver):
                 if f is not None:
-                    print >>f, '#include "%s"\n'%(headerName,)
+                    print('#include "%s"\n'%(headerName,), file=f)
         
         if self.outputDriver:
-            print >>self.outputDriver, '#include <stdio.h>'
-            print >>self.outputDriver, '#include <stdlib.h>\n'
-            print >>self.outputDriver, 'int main(int argc, char **argv) {'
-            print >>self.outputDriver, '  int index = -1;'
-            print >>self.outputDriver, '  if (argc > 1) index = atoi(argv[1]);'
+            print('#include <stdio.h>', file=self.outputDriver)
+            print('#include <stdlib.h>\n', file=self.outputDriver)
+            print('int main(int argc, char **argv) {', file=self.outputDriver)
+            print('  int index = -1;', file=self.outputDriver)
+            print('  if (argc > 1) index = atoi(argv[1]);', file=self.outputDriver)
             
     def finish(self):
         if self.layoutTests:
-            print >>self.output, 'int main(int argc, char **argv) {'
-            print >>self.output, '  int index = -1;'
-            print >>self.output, '  if (argc > 1) index = atoi(argv[1]);'
+            print('int main(int argc, char **argv) {', file=self.output)
+            print('  int index = -1;', file=self.output)
+            print('  if (argc > 1) index = atoi(argv[1]);', file=self.output)
             for i,f in self.layoutTests:
-                print >>self.output, '  if (index == -1 || index == %d)' % i
-                print >>self.output, '    %s();' % f
-            print >>self.output, '  return 0;'
-            print >>self.output, '}' 
+                print('  if (index == -1 || index == %d)' % i, file=self.output)
+                print('    %s();' % f, file=self.output)
+            print('  return 0;', file=self.output)
+            print('}', file=self.output) 
 
         if self.outputDriver:
-            print >>self.outputDriver, '  printf("DONE\\n");'
-            print >>self.outputDriver, '  return 0;'
-            print >>self.outputDriver, '}'        
+            print('  printf("DONE\\n");', file=self.outputDriver)
+            print('  return 0;', file=self.outputDriver)
+            print('}', file=self.outputDriver)        
 
     def addDeclaration(self, decl):
         if decl in self.declarations:
@@ -71,11 +72,11 @@ class TypePrinter(object):
 
         self.declarations.add(decl)
         if self.outputHeader:
-            print >>self.outputHeader, decl
+            print(decl, file=self.outputHeader)
         else:
-            print >>self.output, decl
+            print(decl, file=self.output)
             if self.outputTests:
-                print >>self.outputTests, decl
+                print(decl, file=self.outputTests)
         return True
 
     def getTypeName(self, T):
@@ -91,12 +92,12 @@ class TypePrinter(object):
         tyNameClean = tyName.replace(' ','_').replace('*','star')
         fnName = 'test_%s' % tyNameClean
             
-        print >>self.output,'void %s(void) {' % fnName
+        print('void %s(void) {' % fnName, file=self.output)
         self.printSizeOfType('    %s'%fnName, tyName, ty, self.output)
         self.printAlignOfType('    %s'%fnName, tyName, ty, self.output)
         self.printOffsetsOfType('    %s'%fnName, tyName, ty, self.output)
-        print >>self.output,'}'
-        print >>self.output
+        print('}', file=self.output)
+        print(file=self.output)
         
         self.layoutTests.append((i,fnName))
         
@@ -115,71 +116,71 @@ class TypePrinter(object):
 
         fnName = 'fn%d'%(FT.index,)
         if self.outputHeader:
-            print >>self.outputHeader,'%s %s(%s);'%(retvalTypeName, fnName, args)
+            print('%s %s(%s);'%(retvalTypeName, fnName, args), file=self.outputHeader)
         elif self.outputTests:
-            print >>self.outputTests,'%s %s(%s);'%(retvalTypeName, fnName, args)
+            print('%s %s(%s);'%(retvalTypeName, fnName, args), file=self.outputTests)
             
-        print >>self.output,'%s %s(%s)'%(retvalTypeName, fnName, args),
+        print('%s %s(%s)'%(retvalTypeName, fnName, args), end=' ', file=self.output)
         if self.writeBody:
-            print >>self.output, '{'
+            print('{', file=self.output)
             
             for i,t in enumerate(FT.argTypes):
                 self.printValueOfType('    %s'%fnName, 'arg%d'%i, t)
 
             if retvalName is not None:
-                print >>self.output, '  return %s;'%(retvalName,)
-            print >>self.output, '}'
+                print('  return %s;'%(retvalName,), file=self.output)
+            print('}', file=self.output)
         else:
-            print >>self.output, '{}'
-        print >>self.output
+            print('{}', file=self.output)
+        print(file=self.output)
 
         if self.outputDriver:
-            print >>self.outputDriver, '  if (index == -1 || index == %d) {' % i
-            print >>self.outputDriver, '    extern void test_%s(void);' % fnName
-            print >>self.outputDriver, '    test_%s();' % fnName
-            print >>self.outputDriver, '   }'
+            print('  if (index == -1 || index == %d) {' % i, file=self.outputDriver)
+            print('    extern void test_%s(void);' % fnName, file=self.outputDriver)
+            print('    test_%s();' % fnName, file=self.outputDriver)
+            print('   }', file=self.outputDriver)
             
         if self.outputTests:
             if self.outputHeader:
-                print >>self.outputHeader, 'void test_%s(void);'%(fnName,)
+                print('void test_%s(void);'%(fnName,), file=self.outputHeader)
 
             if retvalName is None:
                 retvalTests = None
             else:
                 retvalTests = self.getTestValuesArray(FT.returnType)
             tests = map(self.getTestValuesArray, FT.argTypes)
-            print >>self.outputTests, 'void test_%s(void) {'%(fnName,)
+            print('void test_%s(void) {'%(fnName,), file=self.outputTests)
 
             if retvalTests is not None:
-                print >>self.outputTests, '  printf("%s: testing return.\\n");'%(fnName,)
-                print >>self.outputTests, '  for (int i=0; i<%d; ++i) {'%(retvalTests[1],)
+                print('  printf("%s: testing return.\\n");'%(fnName,), file=self.outputTests)
+                print('  for (int i=0; i<%d; ++i) {'%(retvalTests[1],), file=self.outputTests)
                 args = ', '.join(['%s[%d]'%(t,randrange(l)) for t,l in tests])
-                print >>self.outputTests, '    %s RV;'%(retvalTypeName,)
-                print >>self.outputTests, '    %s = %s[i];'%(retvalName, retvalTests[0])
-                print >>self.outputTests, '    RV = %s(%s);'%(fnName, args)
+                print('    %s RV;'%(retvalTypeName,), file=self.outputTests)
+                print('    %s = %s[i];'%(retvalName, retvalTests[0]), file=self.outputTests)
+                print('    RV = %s(%s);'%(fnName, args), file=self.outputTests)
                 self.printValueOfType('  %s_RV'%fnName, 'RV', FT.returnType, output=self.outputTests, indent=4)
                 self.checkTypeValues('RV', '%s[i]' % retvalTests[0], FT.returnType, output=self.outputTests, indent=4)
-                print >>self.outputTests, '  }'
+                print('  }', file=self.outputTests)
             
             if tests:
-                print >>self.outputTests, '  printf("%s: testing arguments.\\n");'%(fnName,)
+                print('  printf("%s: testing arguments.\\n");'%(fnName,), file=self.outputTests)
             for i,(array,length) in enumerate(tests):
                 for j in range(length):
                     args = ['%s[%d]'%(t,randrange(l)) for t,l in tests]
                     args[i] = '%s[%d]'%(array,j)
-                    print >>self.outputTests, '  %s(%s);'%(fnName, ', '.join(args),)
-            print >>self.outputTests, '}'
+                    print('  %s(%s);'%(fnName, ', '.join(args),), file=self.outputTests)
+            print('}', file=self.outputTests)
 
     def getTestReturnValue(self, type):
         typeName = self.getTypeName(type)        
         info = self.testReturnValues.get(typeName)
         if info is None:
             name = '%s_retval'%(typeName.replace(' ','_').replace('*','star'),)
-            print >>self.output, '%s %s;'%(typeName,name)
+            print('%s %s;'%(typeName,name), file=self.output)
             if self.outputHeader:
-                print >>self.outputHeader, 'extern %s %s;'%(typeName,name)
+                print('extern %s %s;'%(typeName,name), file=self.outputHeader)
             elif self.outputTests:                
-                print >>self.outputTests, 'extern %s %s;'%(typeName,name)
+                print('extern %s %s;'%(typeName,name), file=self.outputTests)
             info = self.testReturnValues[typeName] = name
         return info
 
@@ -188,12 +189,12 @@ class TypePrinter(object):
         info = self.testValues.get(typeName)
         if info is None:
             name = '%s_values'%(typeName.replace(' ','_').replace('*','star'),)
-            print >>self.outputTests, 'static %s %s[] = {'%(typeName,name)
+            print('static %s %s[] = {'%(typeName,name), file=self.outputTests)
             length = 0
             for item in self.getTestValues(type):
-                print >>self.outputTests, '\t%s,'%(item,)
+                print('\t%s,'%(item,), file=self.outputTests)
                 length += 1
-            print >>self.outputTests,'};'
+            print('};', file=self.outputTests)
             info = self.testValues[typeName] = (name,length)
         return info
 
@@ -253,16 +254,16 @@ class TypePrinter(object):
             raise NotImplementedError('Cannot make tests values of type: "%s"'%(t,))
 
     def printSizeOfType(self, prefix, name, t, output=None, indent=2):
-        print >>output, '%*sprintf("%s: sizeof(%s) = %%ld\\n", (long)sizeof(%s));'%(indent, '', prefix, name, name) 
+        print('%*sprintf("%s: sizeof(%s) = %%ld\\n", (long)sizeof(%s));'%(indent, '', prefix, name, name), file=output) 
     def printAlignOfType(self, prefix, name, t, output=None, indent=2):
-        print >>output, '%*sprintf("%s: __alignof__(%s) = %%ld\\n", (long)__alignof__(%s));'%(indent, '', prefix, name, name) 
+        print('%*sprintf("%s: __alignof__(%s) = %%ld\\n", (long)__alignof__(%s));'%(indent, '', prefix, name, name), file=output) 
     def printOffsetsOfType(self, prefix, name, t, output=None, indent=2):
         if isinstance(t, RecordType):
             for i,f in enumerate(t.fields):
                 if f.isBitField():
                     continue
                 fname = 'field%d' % i
-                print >>output, '%*sprintf("%s: __builtin_offsetof(%s, %s) = %%ld\\n", (long)__builtin_offsetof(%s, %s));'%(indent, '', prefix, name, fname, name, fname) 
+                print('%*sprintf("%s: __builtin_offsetof(%s, %s) = %%ld\\n", (long)__builtin_offsetof(%s, %s));'%(indent, '', prefix, name, fname, name, fname), file=output) 
                 
     def printValueOfType(self, prefix, name, t, output=None, indent=2):
         if output is None:
@@ -286,13 +287,13 @@ class TypePrinter(object):
                 code = 'Lf'
             else:
                 code = 'p'
-            print >>output, '%*sprintf("%s: %s = %%%s\\n", %s);'%(
-                indent, '', prefix, name, code, value_expr)
+            print('%*sprintf("%s: %s = %%%s\\n", %s);'%(
+                indent, '', prefix, name, code, value_expr), file=output)
         elif isinstance(t, EnumType):
-            print >>output, '%*sprintf("%s: %s = %%d\\n", %s);'%(indent, '', prefix, name, name)
+            print('%*sprintf("%s: %s = %%d\\n", %s);'%(indent, '', prefix, name, name), file=output)
         elif isinstance(t, RecordType):
             if not t.fields:
-                print >>output, '%*sprintf("%s: %s (empty)\\n");'%(indent, '', prefix, name) 
+                print('%*sprintf("%s: %s (empty)\\n");'%(indent, '', prefix, name), file=output) 
             for i,f in enumerate(t.fields):
                 if f.isPaddingBitField():
                     continue
@@ -317,9 +318,9 @@ class TypePrinter(object):
         if output is None:
             output = self.output
         if isinstance(t, BuiltinType):
-            print >>output, '%*sassert(%s == %s);' % (indent, '', nameLHS, nameRHS)
+            print('%*sassert(%s == %s);' % (indent, '', nameLHS, nameRHS), file=output)
         elif isinstance(t, EnumType):
-            print >>output, '%*sassert(%s == %s);' % (indent, '', nameLHS, nameRHS)
+            print('%*sassert(%s == %s);' % (indent, '', nameLHS, nameRHS), file=output)
         elif isinstance(t, RecordType):
             for i,f in enumerate(t.fields):
                 if f.isPaddingBitField():
@@ -644,7 +645,7 @@ def main():
             FT = ftg.get(N)
         except RuntimeError as e:
             if e.args[0]=='maximum recursion depth exceeded':
-                print >>sys.stderr,'WARNING: Skipped %d, recursion limit exceeded (bad arguments?)'%(N,)
+                print('WARNING: Skipped %d, recursion limit exceeded (bad arguments?)'%(N,), file=sys.stderr)
                 return
             raise
         if opts.testLayout:
diff --git a/utils/ABITest/Enumeration.py b/utils/ABITest/Enumeration.py
index 29a81b4f13..76067243d1 100644
--- a/utils/ABITest/Enumeration.py
+++ b/utils/ABITest/Enumeration.py
@@ -1,5 +1,6 @@
 """Utilities for enumeration of finite and countably infinite sets.
 """
+from __future__ import print_function
 ###
 # Countable iteration
 
@@ -234,18 +235,18 @@ def testPairs():
     for i in range(min(W*H,40)):
         x,y = getNthPairBounded(i,W,H)
         x2,y2 = getNthPairBounded(i,W,H,useDivmod=True)
-        print i,(x,y),(x2,y2)
+        print(i,(x,y),(x2,y2))
         a[y][x] = '%2d'%i
         b[y2][x2] = '%2d'%i
 
-    print '-- a --'
+    print('-- a --')
     for ln in a[::-1]:
         if ''.join(ln).strip():
-            print '  '.join(ln)
-    print '-- b --'
+            print('  '.join(ln))
+    print('-- b --')
     for ln in b[::-1]:
         if ''.join(ln).strip():
-            print '  '.join(ln)
+            print('  '.join(ln))
 
 def testPairsVB():
     bounds = [2,2,4,aleph0,5,aleph0]
@@ -253,13 +254,13 @@ def testPairsVB():
     b = [['  ' for x in range(15)] for y in range(15)]
     for i in range(min(sum(bounds),40)):
         x,y = getNthPairVariableBounds(i, bounds)
-        print i,(x,y)
+        print(i,(x,y))
         a[y][x] = '%2d'%i
 
-    print '-- a --'
+    print('-- a --')
     for ln in a[::-1]:
         if ''.join(ln).strip():
-            print '  '.join(ln)
+            print('  '.join(ln))
 
 ###
 
diff --git a/utils/ABITest/TypeGen.py b/utils/ABITest/TypeGen.py
index f8a4d07e11..608089429a 100644
--- a/utils/ABITest/TypeGen.py
+++ b/utils/ABITest/TypeGen.py
@@ -1,4 +1,5 @@
 """Flexible enumeration of C types."""
+from __future__ import print_function
 
 from Enumeration import *
 
@@ -462,7 +463,7 @@ def test():
     atg.addGenerator( btg )
     atg.addGenerator( RecordTypeGenerator(fields0, False, 4) )
     atg.addGenerator( etg )
-    print 'Cardinality:',atg.cardinality
+    print('Cardinality:',atg.cardinality)
     for i in range(100):
         if i == atg.cardinality:
             try:
@@ -470,7 +471,7 @@ def test():
                 raise RuntimeError("Cardinality was wrong")
             except AssertionError:
                 break
-        print '%4d: %s'%(i, atg.get(i))
+        print('%4d: %s'%(i, atg.get(i)))
 
 if __name__ == '__main__':
     test()
diff --git a/utils/CIndex/completion_logger_server.py b/utils/CIndex/completion_logger_server.py
index 0652b1f4a8..818d10d73b 100755
--- a/utils/CIndex/completion_logger_server.py
+++ b/utils/CIndex/completion_logger_server.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+from __future__ import print_function
 import sys
 from socket import *
 from time import strftime
@@ -6,7 +7,7 @@ import datetime
 
 def main():
   if len(sys.argv) < 4:
-    print "completion_logger_server.py <listen address> <listen port> <log file>"
+    print("completion_logger_server.py <listen address> <listen port> <log file>")
     exit(1)
 
   host = sys.argv[1]
@@ -18,7 +19,7 @@ def main():
   UDPSock = socket(AF_INET,SOCK_DGRAM)
   UDPSock.bind(addr)
   
-  print "Listing on {0}:{1} and logging to '{2}'".format(host, port, sys.argv[3])
+  print("Listing on {0}:{1} and logging to '{2}'".format(host, port, sys.argv[3]))
 
   # Open the logging file.
   f = open(sys.argv[3], "a")
diff --git a/utils/TestUtils/deep-stack.py b/utils/TestUtils/deep-stack.py
index 1750a5fca0..8636efabec 100755
--- a/utils/TestUtils/deep-stack.py
+++ b/utils/TestUtils/deep-stack.py
@@ -1,22 +1,23 @@
 #!/usr/bin/env python
 
+from __future__ import print_function
 def pcall(f, N):
     if N == 0:
-        print >>f, '    f(0)'
+        print('    f(0)', file=f)
         return
 
-    print >>f, '    f('
+    print('    f(', file=f)
     pcall(f, N - 1)
-    print >>f, '     )'
+    print('     )', file=f)
 
 def main():
     f = open('t.c','w')
-    print >>f, 'int f(int n) { return n; }'
-    print >>f, 'int t() {'
-    print >>f, '  return'
+    print('int f(int n) { return n; }', file=f)
+    print('int t() {', file=f)
+    print('  return', file=f)
     pcall(f, 10000)
-    print >>f, '  ;'
-    print >>f, '}'
+    print('  ;', file=f)
+    print('}', file=f)
 
 if __name__ == "__main__":
     import sys
diff --git a/utils/analyzer/CmpRuns.py b/utils/analyzer/CmpRuns.py
index 43d1fe83b9..14be963296 100755
--- a/utils/analyzer/CmpRuns.py
+++ b/utils/analyzer/CmpRuns.py
@@ -25,6 +25,7 @@ Usage:
     diff = compareResults(resultsA, resultsB)
 
 """
+from __future__ import print_function
 
 from collections import defaultdict
 
@@ -318,7 +319,7 @@ def compareStats(resultsA, resultsB):
     statsB = deriveStats(resultsB)
     keys = sorted(statsA.keys())
     for key in keys:
-        print key
+        print(key)
         for kkey in statsA[key]:
             valA = float(statsA[key][kkey])
             valB = float(statsB[key][kkey])
@@ -331,7 +332,7 @@ def compareStats(resultsA, resultsB):
                         report = Colors.GREEN + report + Colors.CLEAR
                     elif ratio > 0.2:
                         report = Colors.RED + report + Colors.CLEAR
-            print "\t %s %s" % (kkey, report)
+            print("\t %s %s" % (kkey, report))
 
 def dumpScanBuildResultsDiff(dirA, dirB, opts, deleteEmpty=True,
                              Stdout=sys.stdout):
diff --git a/utils/analyzer/SATestAdd.py b/utils/analyzer/SATestAdd.py
index 041b24409f..377897e143 100755
--- a/utils/analyzer/SATestAdd.py
+++ b/utils/analyzer/SATestAdd.py
@@ -42,6 +42,7 @@ the Repository Directory.
                                           diff -ur CachedSource PatchedSource \
                                               > changes_for_analyzer.patch
 """
+from __future__ import print_function
 import SATestBuild
 
 import os
@@ -66,7 +67,7 @@ def addNewProject(ID, BuildMode):
     CurDir = os.path.abspath(os.curdir)
     Dir = SATestBuild.getProjectDir(ID)
     if not os.path.exists(Dir):
-        print "Error: Project directory is missing: %s" % Dir
+        print("Error: Project directory is missing: %s" % Dir)
         sys.exit(-1)
 
     # Build the project.
@@ -78,30 +79,30 @@ def addNewProject(ID, BuildMode):
     if os.path.exists(ProjectMapPath):
         FileMode = "r+b"
     else:
-        print "Warning: Creating the Project Map file!!"
+        print("Warning: Creating the Project Map file!!")
         FileMode = "w+b"
 
     with open(ProjectMapPath, FileMode) as PMapFile:
         if (isExistingProject(PMapFile, ID)):
-            print >> sys.stdout, 'Warning: Project with ID \'', ID, \
-                                 '\' already exists.'
-            print >> sys.stdout, "Reference output has been regenerated."
+            print('Warning: Project with ID \'', ID, \
+                                 '\' already exists.', file=sys.stdout)
+            print("Reference output has been regenerated.", file=sys.stdout)
         else:
             PMapWriter = csv.writer(PMapFile)
             PMapWriter.writerow((ID, int(BuildMode)))
-            print "The project map is updated: ", ProjectMapPath
+            print("The project map is updated: ", ProjectMapPath)
 
 
 # TODO: Add an option not to build.
 # TODO: Set the path to the Repository directory.
 if __name__ == '__main__':
     if len(sys.argv) < 2 or sys.argv[1] in ('-h', '--help'):
-        print >> sys.stderr, 'Add a new project for testing to the analyzer'\
+        print('Add a new project for testing to the analyzer'\
                              '\nUsage: ', sys.argv[0],\
                              'project_ID <mode>\n' \
                              'mode: 0 for single file project, ' \
                              '1 for scan_build, ' \
-                             '2 for single file c++11 project'
+                             '2 for single file c++11 project', file=sys.stderr)
         sys.exit(-1)
 
     BuildMode = 1
diff --git a/utils/analyzer/SATestBuild.py b/utils/analyzer/SATestBuild.py
index ef0ab195f1..70c425d38e 100755
--- a/utils/analyzer/SATestBuild.py
+++ b/utils/analyzer/SATestBuild.py
@@ -122,7 +122,7 @@ if 'CC' in os.environ:
 else:
     Clang = SATestUtils.which("clang", os.environ['PATH'])
 if not Clang:
-    print "Error: cannot find 'clang' in PATH"
+    print("Error: cannot find 'clang' in PATH")
     sys.exit(1)
 
 # Number of jobs.
@@ -570,8 +570,8 @@ def runCmpResults(Dir, Strictness=0):
     NewList.remove(os.path.join(NewDir, LogFolderName))
 
     if len(RefList) != len(NewList):
-        print "Mismatch in number of results folders: %s vs %s" % (
-            RefList, NewList)
+        print("Mismatch in number of results folders: %s vs %s" % (
+            RefList, NewList))
         sys.exit(1)
 
     # There might be more then one folder underneath - one per each scan-build
@@ -719,11 +719,11 @@ def validateProjectFile(PMapFile):
     """
     for I in iterateOverProjects(PMapFile):
         if len(I) != 2:
-            print "Error: Rows in the ProjectMapFile should have 2 entries."
+            print("Error: Rows in the ProjectMapFile should have 2 entries.")
             raise Exception()
         if I[1] not in ('0', '1', '2'):
-            print "Error: Second entry in the ProjectMapFile should be 0" \
-                  " (single file), 1 (project), or 2(single file c++11)."
+            print("Error: Second entry in the ProjectMapFile should be 0" \
+                  " (single file), 1 (project), or 2(single file c++11).")
             raise Exception()
 
 def singleThreadedTestAll(Args, ProjectsToTest):
@@ -806,5 +806,5 @@ if __name__ == '__main__':
 
     TestsPassed = testAll(Args)
     if not TestsPassed:
-        print "ERROR: Tests failed."
+        print("ERROR: Tests failed.")
         sys.exit(42)
diff --git a/utils/analyzer/SATestUpdateDiffs.py b/utils/analyzer/SATestUpdateDiffs.py
index 3f1aafa690..64e6ca43db 100755
--- a/utils/analyzer/SATestUpdateDiffs.py
+++ b/utils/analyzer/SATestUpdateDiffs.py
@@ -3,6 +3,7 @@
 """
 Update reference results for static analyzer.
 """
+from __future__ import print_function
 
 import SATestBuild
 
@@ -15,7 +16,7 @@ Verbose = 0
 
 def runCmd(Command, **kwargs):
     if Verbose:
-        print "Executing %s" % Command
+        print("Executing %s" % Command)
     check_call(Command, shell=True, **kwargs)
 
 
@@ -30,8 +31,8 @@ def updateReferenceResults(ProjName, ProjBuildMode):
         SATestBuild.getSBOutputDirName(IsReferenceBuild=False))
 
     if not os.path.exists(CreatedResultsPath):
-        print >> sys.stderr, "New results not found, was SATestBuild.py "\
-                             "previously run?"
+        print("New results not found, was SATestBuild.py "\
+                             "previously run?", file=sys.stderr)
         sys.exit(1)
 
     BuildLogPath = SATestBuild.getBuildLogPath(RefResultsPath)
@@ -62,9 +63,9 @@ def updateReferenceResults(ProjName, ProjBuildMode):
 
 def main(argv):
     if len(argv) == 2 and argv[1] in ('-h', '--help'):
-        print >> sys.stderr, "Update static analyzer reference results based "\
+        print("Update static analyzer reference results based "\
                              "\non the previous run of SATestBuild.py.\n"\
-                             "\nN.B.: Assumes that SATestBuild.py was just run"
+                             "\nN.B.: Assumes that SATestBuild.py was just run", file=sys.stderr)
         sys.exit(1)
 
     with SATestBuild.projectFileHandler() as f:
diff --git a/utils/analyzer/SumTimerInfo.py b/utils/analyzer/SumTimerInfo.py
index 50e1cb854f..b3219b00c7 100644
--- a/utils/analyzer/SumTimerInfo.py
+++ b/utils/analyzer/SumTimerInfo.py
@@ -6,13 +6,14 @@ Script to Summarize statistics in the scan-build output.
 Statistics are enabled by passing '-internal-stats' option to scan-build
 (or '-analyzer-stats' to the analyzer).
 """
+from __future__ import print_function
 
 import sys
 
 if __name__ == '__main__':
     if len(sys.argv) < 2:
-        print >> sys.stderr, 'Usage: ', sys.argv[0],\
-                             'scan_build_output_file'
+        print('Usage: ', sys.argv[0],\
+                             'scan_build_output_file', file=sys.stderr)
         sys.exit(-1)
 
     f = open(sys.argv[1], 'r')
@@ -65,15 +66,15 @@ if __name__ == '__main__':
             s = line.split()
             TotalTime = TotalTime + float(s[6])
 
-    print "TU Count %d" % (Count)
-    print "Time %f" % (Time)
-    print "Warnings %d" % (Warnings)
-    print "Functions Analyzed %d" % (FunctionsAnalyzed)
-    print "Reachable Blocks %d" % (ReachableBlocks)
-    print "Reached Max Steps %d" % (ReachedMaxSteps)
-    print "Number of Steps %d" % (NumSteps)
-    print "Number of Inlined calls %d (bifurcated %d)" % (
-        NumInlinedCallSites, NumBifurcatedCallSites)
-    print "MaxTime %f" % (MaxTime)
-    print "TotalTime %f" % (TotalTime)
-    print "Max CFG Size %d" % (MaxCFGSize)
+    print("TU Count %d" % (Count))
+    print("Time %f" % (Time))
+    print("Warnings %d" % (Warnings))
+    print("Functions Analyzed %d" % (FunctionsAnalyzed))
+    print("Reachable Blocks %d" % (ReachableBlocks))
+    print("Reached Max Steps %d" % (ReachedMaxSteps))
+    print("Number of Steps %d" % (NumSteps))
+    print("Number of Inlined calls %d (bifurcated %d)" % (
+        NumInlinedCallSites, NumBifurcatedCallSites))
+    print("MaxTime %f" % (MaxTime))
+    print("TotalTime %f" % (TotalTime))
+    print("Max CFG Size %d" % (MaxCFGSize))
diff --git a/utils/check_cfc/setup.py b/utils/check_cfc/setup.py
index b5fc473639..6005f6f411 100644
--- a/utils/check_cfc/setup.py
+++ b/utils/check_cfc/setup.py
@@ -1,6 +1,7 @@
 """For use on Windows. Run with:
     python.exe setup.py py2exe
     """
+from __future__ import print_function
 from distutils.core import setup
 try:
     import py2exe
@@ -8,10 +9,10 @@ except ImportError:
     import platform
     import sys
     if platform.system() == 'Windows':
-        print "Could not find py2exe. Please install then run setup.py py2exe."
+        print("Could not find py2exe. Please install then run setup.py py2exe.")
         raise
     else:
-        print "setup.py only required on Windows."
+        print("setup.py only required on Windows.")
         sys.exit(1)
 
 setup(
diff --git a/utils/clangdiag.py b/utils/clangdiag.py
index 9a80e2696d..d449194e28 100755
--- a/utils/clangdiag.py
+++ b/utils/clangdiag.py
@@ -9,6 +9,7 @@
 #   (lldb) command script import /path/to/clandiag.py
 #----------------------------------------------------------------------
 
+from __future__ import print_function
 import lldb
 import argparse
 import commands
@@ -189,4 +190,4 @@ def __lldb_init_module(debugger, dict):
     # Add any commands contained in this module to LLDB
     debugger.HandleCommand(
         'command script add -f clangdiag.the_diag_command clangdiag')
-    print 'The "clangdiag" command has been installed, type "help clangdiag" or "clangdiag --help" for detailed help.'
+    print('The "clangdiag" command has been installed, type "help clangdiag" or "clangdiag --help" for detailed help.')
diff --git a/utils/modfuzz.py b/utils/modfuzz.py
index 948603338c..4dc25e8469 100644
--- a/utils/modfuzz.py
+++ b/utils/modfuzz.py
@@ -4,6 +4,7 @@
 #  1) Update the 'decls' list below with your fuzzing configuration.
 #  2) Run with the clang binary as the command-line argument.
 
+from __future__ import print_function
 import random
 import subprocess
 import sys
@@ -97,7 +98,7 @@ def generate():
     if not model.fails():
       return
   except KeyboardInterrupt:
-    print
+    print()
     return True
 
   sys.stdout.write('\nReducing:\n')
diff --git a/utils/token-delta.py b/utils/token-delta.py
index 5efb65cb2f..9fc5646bb7 100755
--- a/utils/token-delta.py
+++ b/utils/token-delta.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 
+from __future__ import print_function
 import os
 import re
 import subprocess
@@ -165,7 +166,7 @@ class TMBDDelta(DeltaAlgorithm):
         byFile = self.writeFiles(changes, self.tempFiles)
 
         if self.log:
-            print >>sys.stderr, 'TEST - ',
+            print('TEST - ', end=' ', file=sys.stderr)
             if self.log > 1:
                 for i,(file,_) in enumerate(self.tokenLists):
                     indices = byFile[i]
@@ -184,8 +185,8 @@ class TMBDDelta(DeltaAlgorithm):
                         sys.stderr.write(str(byFile[i][-1]))
                     sys.stderr.write('] ')
             else:
-                print >>sys.stderr, ', '.join(['%s:%d tokens' % (file, len(byFile[i]))
-                                               for i,(file,_) in enumerate(self.tokenLists)]),
+                print(', '.join(['%s:%d tokens' % (file, len(byFile[i]))
+                                               for i,(file,_) in enumerate(self.tokenLists)]), end=' ', file=sys.stderr)
 
         p = subprocess.Popen([self.testProgram] + self.tempFiles)
         res = p.wait() == 0
@@ -194,10 +195,10 @@ class TMBDDelta(DeltaAlgorithm):
             self.writeFiles(changes, self.targetFiles)
 
         if self.log:
-            print >>sys.stderr, '=> %s' % res
+            print('=> %s' % res, file=sys.stderr)
         else:
             if res:
-                print '\nSUCCESS (%d tokens)' % len(changes)
+                print('\nSUCCESS (%d tokens)' % len(changes))
             else:                
                 sys.stderr.write('.')
 
@@ -209,7 +210,7 @@ class TMBDDelta(DeltaAlgorithm):
                                           for j in range(len(tokens))])
         self.writeFiles(res, self.targetFiles)
         if not self.log:
-            print >>sys.stderr
+            print(file=sys.stderr)
         return res
 
 def tokenBasedMultiDelta(program, files, log):            
@@ -218,15 +219,15 @@ def tokenBasedMultiDelta(program, files, log):
                   for file in files]
 
     numTokens = sum([len(tokens) for _,tokens in tokenLists])
-    print "Delta on %s with %d tokens." % (', '.join(files), numTokens)
+    print("Delta on %s with %d tokens." % (', '.join(files), numTokens))
     
     tbmd = TMBDDelta(program, tokenLists, log)
 
     res = tbmd.run()
 
-    print "Finished %s with %d tokens (in %d tests)." % (', '.join(tbmd.targetFiles),
+    print("Finished %s with %d tokens (in %d tests)." % (', '.join(tbmd.targetFiles),
                                                          len(res),
-                                                         tbmd.numTests)
+                                                         tbmd.numTests))
         
 def main():
     from optparse import OptionParser, OptionGroup
@@ -247,5 +248,5 @@ if __name__ == '__main__':
     try:
         main()
     except KeyboardInterrupt:
-        print >>sys.stderr,'Interrupted.'
+        print('Interrupted.', file=sys.stderr)
         os._exit(1) # Avoid freeing our giant cache.