diff --git a/gyp/pylib/gyp/MSVSSettings.py b/gyp/pylib/gyp/MSVSSettings.py
index a08cc154d7..94525ae1cc 100644
--- a/gyp/pylib/gyp/MSVSSettings.py
+++ b/gyp/pylib/gyp/MSVSSettings.py
@@ -13,6 +13,7 @@
 The MSBuild schemas were also considered.  They are typically found in the
 MSBuild install directory, e.g. c:\Program Files (x86)\MSBuild
 """
+from __future__ import print_function
 
 import sys
 import re
@@ -400,7 +401,7 @@ def _ValidateExclusionSetting(setting, settings, error_msg, stderr=sys.stderr):
 
   if unrecognized:
     # We don't know this setting. Give a warning.
-    print >> stderr, error_msg
+    print(error_msg, file=stderr)
 
 
 def FixVCMacroSlashes(s):
@@ -461,9 +462,9 @@ def ConvertToMSBuildSettings(msvs_settings, stderr=sys.stderr):
           # Invoke the translation function.
           try:
             msvs_tool[msvs_setting](msvs_value, msbuild_settings)
-          except ValueError, e:
-            print >> stderr, ('Warning: while converting %s/%s to MSBuild, '
-                              '%s' % (msvs_tool_name, msvs_setting, e))
+          except ValueError as e:
+            print(('Warning: while converting %s/%s to MSBuild, '
+                              '%s' % (msvs_tool_name, msvs_setting, e)), file=stderr)
         else:
           _ValidateExclusionSetting(msvs_setting,
                                     msvs_tool,
@@ -472,8 +473,8 @@ def ConvertToMSBuildSettings(msvs_settings, stderr=sys.stderr):
                                      (msvs_tool_name, msvs_setting)),
                                     stderr)
     else:
-      print >> stderr, ('Warning: unrecognized tool %s while converting to '
-                        'MSBuild.' % msvs_tool_name)
+      print(('Warning: unrecognized tool %s while converting to '
+                        'MSBuild.' % msvs_tool_name), file=stderr)
   return msbuild_settings
 
 
@@ -517,9 +518,9 @@ def _ValidateSettings(validators, settings, stderr):
         if setting in tool_validators:
           try:
             tool_validators[setting](value)
-          except ValueError, e:
-            print >> stderr, ('Warning: for %s/%s, %s' %
-                              (tool_name, setting, e))
+          except ValueError as e:
+            print(('Warning: for %s/%s, %s' %
+                              (tool_name, setting, e)), file=stderr)
         else:
           _ValidateExclusionSetting(setting,
                                     tool_validators,
@@ -528,7 +529,7 @@ def _ValidateSettings(validators, settings, stderr):
                                     stderr)
 
     else:
-      print >> stderr, ('Warning: unrecognized tool %s' % tool_name)
+      print(('Warning: unrecognized tool %s' % tool_name), file=stderr)
 
 
 # MSVS and MBuild names of the tools.
diff --git a/gyp/pylib/gyp/MSVSVersion.py b/gyp/pylib/gyp/MSVSVersion.py
index d9bfa684fa..c31ff3e114 100644
--- a/gyp/pylib/gyp/MSVSVersion.py
+++ b/gyp/pylib/gyp/MSVSVersion.py
@@ -158,7 +158,7 @@ def _RegistryQuery(key, value=None):
   text = None
   try:
     text = _RegistryQueryBase('Sysnative', key, value)
-  except OSError, e:
+  except OSError as e:
     if e.errno == errno.ENOENT:
       text = _RegistryQueryBase('System32', key, value)
     else:
diff --git a/gyp/pylib/gyp/__init__.py b/gyp/pylib/gyp/__init__.py
index 668f38b60d..30fb7093ee 100755
--- a/gyp/pylib/gyp/__init__.py
+++ b/gyp/pylib/gyp/__init__.py
@@ -4,6 +4,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+from __future__ import print_function
 import copy
 import gyp.input
 import optparse
@@ -34,8 +35,8 @@ def DebugOutput(mode, message, *args):
       pass
     if args:
       message %= args
-    print '%s:%s:%d:%s %s' % (mode.upper(), os.path.basename(ctx[0]),
-                              ctx[1], ctx[2], message)
+    print('%s:%s:%d:%s %s' % (mode.upper(), os.path.basename(ctx[0]),
+                              ctx[1], ctx[2], message))
 
 def FindBuildFiles():
   extension = '.gyp'
@@ -226,12 +227,12 @@ def Noop(value):
           (action == 'store_false' and not value)):
         flags.append(opt)
       elif options.use_environment and env_name:
-        print >>sys.stderr, ('Warning: environment regeneration unimplemented '
+        print(('Warning: environment regeneration unimplemented '
                              'for %s flag %r env_name %r' % (action, opt,
-                                                             env_name))
+                                                             env_name)), file=sys.stderr)
     else:
-      print >>sys.stderr, ('Warning: regeneration unimplemented for action %r '
-                           'flag %r' % (action, opt))
+      print(('Warning: regeneration unimplemented for action %r '
+                           'flag %r' % (action, opt)), file=sys.stderr)
 
   return flags
 
@@ -475,7 +476,7 @@ def gyp_main(args):
   if home_dot_gyp != None:
     default_include = os.path.join(home_dot_gyp, 'include.gypi')
     if os.path.exists(default_include):
-      print 'Using overrides found in ' + default_include
+      print('Using overrides found in ' + default_include)
       includes.append(default_include)
 
   # Command-line --include files come after the default include.
@@ -536,7 +537,7 @@ def gyp_main(args):
 def main(args):
   try:
     return gyp_main(args)
-  except GypError, e:
+  except GypError as e:
     sys.stderr.write("gyp: %s\n" % e)
     return 1
 
diff --git a/gyp/pylib/gyp/common.py b/gyp/pylib/gyp/common.py
index 501118796f..b7bae925f4 100644
--- a/gyp/pylib/gyp/common.py
+++ b/gyp/pylib/gyp/common.py
@@ -363,7 +363,7 @@ def close(self):
         same = False
         try:
           same = filecmp.cmp(self.tmp_path, filename, False)
-        except OSError, e:
+        except OSError as e:
           if e.errno != errno.ENOENT:
             raise
 
@@ -382,9 +382,9 @@ def close(self):
           #
           # No way to get the umask without setting a new one?  Set a safe one
           # and then set it back to the old value.
-          umask = os.umask(077)
+          umask = os.umask(0o77)
           os.umask(umask)
-          os.chmod(self.tmp_path, 0666 & ~umask)
+          os.chmod(self.tmp_path, 0o666 & ~umask)
           if sys.platform == 'win32' and os.path.exists(filename):
             # NOTE: on windows (but not cygwin) rename will not replace an
             # existing file, so it must be preceded with a remove. Sadly there
@@ -464,7 +464,7 @@ def CopyTool(flavor, out_path):
         ''.join([source[0], '# Generated by gyp. Do not edit.\n'] + source[1:]))
 
   # Make file executable.
-  os.chmod(tool_path, 0755)
+  os.chmod(tool_path, 0o755)
 
 
 # From Alex Martelli,
diff --git a/gyp/pylib/gyp/easy_xml.py b/gyp/pylib/gyp/easy_xml.py
index 841f31f925..fd525a712b 100644
--- a/gyp/pylib/gyp/easy_xml.py
+++ b/gyp/pylib/gyp/easy_xml.py
@@ -5,6 +5,7 @@
 import re
 import os
 import locale
+from functools import reduce
 
 
 def XmlToString(content, encoding='utf-8', pretty=False):
diff --git a/gyp/pylib/gyp/flock_tool.py b/gyp/pylib/gyp/flock_tool.py
index b38d8660f7..81fb79d136 100755
--- a/gyp/pylib/gyp/flock_tool.py
+++ b/gyp/pylib/gyp/flock_tool.py
@@ -39,7 +39,7 @@ def ExecFlock(self, lockfile, *cmd_list):
     # where fcntl.flock(fd, LOCK_EX) always fails
     # with EBADF, that's why we use this F_SETLK
     # hack instead.
-    fd = os.open(lockfile, os.O_WRONLY|os.O_NOCTTY|os.O_CREAT, 0666)
+    fd = os.open(lockfile, os.O_WRONLY|os.O_NOCTTY|os.O_CREAT, 0o666)
     if sys.platform.startswith('aix'):
       # Python on AIX is compiled with LARGEFILE support, which changes the
       # struct size.
diff --git a/gyp/pylib/gyp/generator/analyzer.py b/gyp/pylib/gyp/generator/analyzer.py
index 921c1a6b71..ce7f83c932 100644
--- a/gyp/pylib/gyp/generator/analyzer.py
+++ b/gyp/pylib/gyp/generator/analyzer.py
@@ -61,6 +61,7 @@
 directly supplied to gyp. OTOH if both "a.gyp" and "b.gyp" are supplied to gyp
 then the "all" target includes "b1" and "b2".
 """
+from __future__ import print_function
 
 import gyp.common
 import gyp.ninja_syntax as ninja_syntax
@@ -155,7 +156,7 @@ def _AddSources(sources, base_path, base_path_components, result):
       continue
     result.append(base_path + source)
     if debug:
-      print 'AddSource', org_source, result[len(result) - 1]
+      print('AddSource', org_source, result[len(result) - 1])
 
 
 def _ExtractSourcesFromAction(action, base_path, base_path_components,
@@ -185,7 +186,7 @@ def _ExtractSources(target, target_dict, toplevel_dir):
     base_path += '/'
 
   if debug:
-    print 'ExtractSources', target, base_path
+    print('ExtractSources', target, base_path)
 
   results = []
   if 'sources' in target_dict:
@@ -278,7 +279,7 @@ def _WasBuildFileModified(build_file, data, files, toplevel_dir):
   the root of the source tree."""
   if _ToLocalPath(toplevel_dir, _ToGypPath(build_file)) in files:
     if debug:
-      print 'gyp file modified', build_file
+      print('gyp file modified', build_file)
     return True
 
   # First element of included_files is the file itself.
@@ -291,8 +292,8 @@ def _WasBuildFileModified(build_file, data, files, toplevel_dir):
         _ToGypPath(gyp.common.UnrelativePath(include_file, build_file))
     if _ToLocalPath(toplevel_dir, rel_include_file) in files:
       if debug:
-        print 'included gyp file modified, gyp_file=', build_file, \
-            'included file=', rel_include_file
+        print('included gyp file modified, gyp_file=', build_file, \
+            'included file=', rel_include_file)
       return True
   return False
 
@@ -373,7 +374,7 @@ def _GenerateTargets(data, target_list, target_dicts, toplevel_dir, files,
     # If a build file (or any of its included files) is modified we assume all
     # targets in the file are modified.
     if build_file_in_files[build_file]:
-      print 'matching target from modified build file', target_name
+      print('matching target from modified build file', target_name)
       target.match_status = MATCH_STATUS_MATCHES
       matching_targets.append(target)
     else:
@@ -381,7 +382,7 @@ def _GenerateTargets(data, target_list, target_dicts, toplevel_dir, files,
                                 toplevel_dir)
       for source in sources:
         if _ToGypPath(os.path.normpath(source)) in files:
-          print 'target', target_name, 'matches', source
+          print('target', target_name, 'matches', source)
           target.match_status = MATCH_STATUS_MATCHES
           matching_targets.append(target)
           break
@@ -433,7 +434,7 @@ def _DoesTargetDependOnMatchingTargets(target):
   for dep in target.deps:
     if _DoesTargetDependOnMatchingTargets(dep):
       target.match_status = MATCH_STATUS_MATCHES_BY_DEPENDENCY
-      print '\t', target.name, 'matches by dep', dep.name
+      print('\t', target.name, 'matches by dep', dep.name)
       return True
   target.match_status = MATCH_STATUS_DOESNT_MATCH
   return False
@@ -445,7 +446,7 @@ def _GetTargetsDependingOnMatchingTargets(possible_targets):
   supplied as input to analyzer.
   possible_targets: targets to search from."""
   found = []
-  print 'Targets that matched by dependency:'
+  print('Targets that matched by dependency:')
   for target in possible_targets:
     if _DoesTargetDependOnMatchingTargets(target):
       found.append(target)
@@ -484,12 +485,12 @@ def _AddCompileTargets(target, roots, add_if_no_ancestor, result):
           (add_if_no_ancestor or target.requires_build)) or
          (target.is_static_library and add_if_no_ancestor and
           not target.is_or_has_linked_ancestor)):
-    print '\t\tadding to compile targets', target.name, 'executable', \
+    print('\t\tadding to compile targets', target.name, 'executable', \
            target.is_executable, 'added_to_compile_targets', \
            target.added_to_compile_targets, 'add_if_no_ancestor', \
            add_if_no_ancestor, 'requires_build', target.requires_build, \
            'is_static_library', target.is_static_library, \
-           'is_or_has_linked_ancestor', target.is_or_has_linked_ancestor
+           'is_or_has_linked_ancestor', target.is_or_has_linked_ancestor)
     result.add(target)
     target.added_to_compile_targets = True
 
@@ -500,7 +501,7 @@ def _GetCompileTargets(matching_targets, supplied_targets):
   supplied_targets: set of targets supplied to analyzer to search from."""
   result = set()
   for target in matching_targets:
-    print 'finding compile targets for match', target.name
+    print('finding compile targets for match', target.name)
     _AddCompileTargets(target, supplied_targets, True, result)
   return result
 
@@ -508,46 +509,46 @@ def _GetCompileTargets(matching_targets, supplied_targets):
 def _WriteOutput(params, **values):
   """Writes the output, either to stdout or a file is specified."""
   if 'error' in values:
-    print 'Error:', values['error']
+    print('Error:', values['error'])
   if 'status' in values:
-    print values['status']
+    print(values['status'])
   if 'targets' in values:
     values['targets'].sort()
-    print 'Supplied targets that depend on changed files:'
+    print('Supplied targets that depend on changed files:')
     for target in values['targets']:
-      print '\t', target
+      print('\t', target)
   if 'invalid_targets' in values:
     values['invalid_targets'].sort()
-    print 'The following targets were not found:'
+    print('The following targets were not found:')
     for target in values['invalid_targets']:
-      print '\t', target
+      print('\t', target)
   if 'build_targets' in values:
     values['build_targets'].sort()
-    print 'Targets that require a build:'
+    print('Targets that require a build:')
     for target in values['build_targets']:
-      print '\t', target
+      print('\t', target)
   if 'compile_targets' in values:
     values['compile_targets'].sort()
-    print 'Targets that need to be built:'
+    print('Targets that need to be built:')
     for target in values['compile_targets']:
-      print '\t', target
+      print('\t', target)
   if 'test_targets' in values:
     values['test_targets'].sort()
-    print 'Test targets:'
+    print('Test targets:')
     for target in values['test_targets']:
-      print '\t', target
+      print('\t', target)
 
   output_path = params.get('generator_flags', {}).get(
       'analyzer_output_path', None)
   if not output_path:
-    print json.dumps(values)
+    print(json.dumps(values))
     return
   try:
     f = open(output_path, 'w')
     f.write(json.dumps(values) + '\n')
     f.close()
   except IOError as e:
-    print 'Error writing to output file', output_path, str(e)
+    print('Error writing to output file', output_path, str(e))
 
 
 def _WasGypIncludeFileModified(params, files):
@@ -556,7 +557,7 @@ def _WasGypIncludeFileModified(params, files):
   if params['options'].includes:
     for include in params['options'].includes:
       if _ToGypPath(os.path.normpath(include)) in files:
-        print 'Include file modified, assuming all changed', include
+        print('Include file modified, assuming all changed', include)
         return True
   return False
 
@@ -638,13 +639,13 @@ def find_matching_test_target_names(self):
                                   set(self._root_targets))]
     else:
       test_targets = [x for x in test_targets_no_all]
-    print 'supplied test_targets'
+    print('supplied test_targets')
     for target_name in self._test_target_names:
-      print '\t', target_name
-    print 'found test_targets'
+      print('\t', target_name)
+    print('found test_targets')
     for target in test_targets:
-      print '\t', target.name
-    print 'searching for matching test targets'
+      print('\t', target.name)
+    print('searching for matching test targets')
     matching_test_targets = _GetTargetsDependingOnMatchingTargets(test_targets)
     matching_test_targets_contains_all = (test_target_names_contains_all and
                                           set(matching_test_targets) &
@@ -654,14 +655,14 @@ def find_matching_test_target_names(self):
       # 'all' is subsequentely added to the matching names below.
       matching_test_targets = [x for x in (set(matching_test_targets) &
                                            set(test_targets_no_all))]
-    print 'matched test_targets'
+    print('matched test_targets')
     for target in matching_test_targets:
-      print '\t', target.name
+      print('\t', target.name)
     matching_target_names = [gyp.common.ParseQualifiedTarget(target.name)[1]
                              for target in matching_test_targets]
     if matching_test_targets_contains_all:
       matching_target_names.append('all')
-      print '\tall'
+      print('\tall')
     return matching_target_names
 
   def find_matching_compile_target_names(self):
@@ -677,10 +678,10 @@ def find_matching_compile_target_names(self):
     if 'all' in self._supplied_target_names():
       supplied_targets = [x for x in (set(supplied_targets) |
                                       set(self._root_targets))]
-    print 'Supplied test_targets & compile_targets'
+    print('Supplied test_targets & compile_targets')
     for target in supplied_targets:
-      print '\t', target.name
-    print 'Finding compile targets'
+      print('\t', target.name)
+    print('Finding compile targets')
     compile_targets = _GetCompileTargets(self._changed_targets,
                                          supplied_targets)
     return [gyp.common.ParseQualifiedTarget(target.name)[1]
@@ -699,7 +700,7 @@ def GenerateOutput(target_list, target_dicts, data, params):
 
     toplevel_dir = _ToGypPath(os.path.abspath(params['options'].toplevel_dir))
     if debug:
-      print 'toplevel_dir', toplevel_dir
+      print('toplevel_dir', toplevel_dir)
 
     if _WasGypIncludeFileModified(params, config.files):
       result_dict = { 'status': all_changed_string,
diff --git a/gyp/pylib/gyp/generator/android.py b/gyp/pylib/gyp/generator/android.py
index 5b26cc785a..ed507fbd0d 100644
--- a/gyp/pylib/gyp/generator/android.py
+++ b/gyp/pylib/gyp/generator/android.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -636,8 +637,8 @@ def ComputeOutputParts(self, spec):
     elif self.type == 'none':
       target_ext = '.stamp'
     elif self.type != 'executable':
-      print ("ERROR: What output file should be generated?",
-             "type", self.type, "target", target)
+      print(("ERROR: What output file should be generated?",
+             "type", self.type, "target", target))
 
     if self.type != 'static_library' and self.type != 'shared_library':
       target_prefix = spec.get('product_prefix', target_prefix)
@@ -956,7 +957,7 @@ def PerformBuild(data, configurations, params):
   env = dict(os.environ)
   env['ONE_SHOT_MAKEFILE'] = makefile
   arguments = ['make', '-C', os.environ['ANDROID_BUILD_TOP'], 'gyp_all_modules']
-  print 'Building: %s' % arguments
+  print('Building: %s' % arguments)
   subprocess.check_call(arguments, env=env)
 
 
diff --git a/gyp/pylib/gyp/generator/cmake.py b/gyp/pylib/gyp/generator/cmake.py
index 17f5e6396c..6f901656ce 100644
--- a/gyp/pylib/gyp/generator/cmake.py
+++ b/gyp/pylib/gyp/generator/cmake.py
@@ -27,6 +27,7 @@
 not be able to find the header file directories described in the generated
 CMakeLists.txt file.
 """
+from __future__ import print_function
 
 import multiprocessing
 import os
@@ -863,8 +864,8 @@ def WriteTarget(namer, qualified_target, target_dicts, build_dir, config_to_use,
       default_product_ext = generator_default_variables['SHARED_LIB_SUFFIX']
 
     elif target_type != 'executable':
-      print ('ERROR: What output file should be generated?',
-              'type', target_type, 'target', target_name)
+      print(('ERROR: What output file should be generated?',
+              'type', target_type, 'target', target_name))
 
     product_prefix = spec.get('product_prefix', default_product_prefix)
     product_name = spec.get('product_name', default_product_name)
@@ -1180,11 +1181,11 @@ def PerformBuild(data, configurations, params):
                                               output_dir,
                                               config_name))
     arguments = ['cmake', '-G', 'Ninja']
-    print 'Generating [%s]: %s' % (config_name, arguments)
+    print('Generating [%s]: %s' % (config_name, arguments))
     subprocess.check_call(arguments, cwd=build_dir)
 
     arguments = ['ninja', '-C', build_dir]
-    print 'Building [%s]: %s' % (config_name, arguments)
+    print('Building [%s]: %s' % (config_name, arguments))
     subprocess.check_call(arguments)
 
 
@@ -1212,7 +1213,7 @@ def GenerateOutput(target_list, target_dicts, data, params):
           arglists.append((target_list, target_dicts, data,
                            params, config_name))
           pool.map(CallGenerateOutputForConfig, arglists)
-      except KeyboardInterrupt, e:
+      except KeyboardInterrupt as e:
         pool.terminate()
         raise e
     else:
diff --git a/gyp/pylib/gyp/generator/dump_dependency_json.py b/gyp/pylib/gyp/generator/dump_dependency_json.py
index 160eafe2ef..8e4f3168f3 100644
--- a/gyp/pylib/gyp/generator/dump_dependency_json.py
+++ b/gyp/pylib/gyp/generator/dump_dependency_json.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -96,4 +97,4 @@ def GenerateOutput(target_list, target_dicts, data, params):
   f = open(filename, 'w')
   json.dump(edges, f)
   f.close()
-  print 'Wrote json to %s.' % filename
+  print('Wrote json to %s.' % filename)
diff --git a/gyp/pylib/gyp/generator/eclipse.py b/gyp/pylib/gyp/generator/eclipse.py
index 3544347b3b..b7c6aa951f 100644
--- a/gyp/pylib/gyp/generator/eclipse.py
+++ b/gyp/pylib/gyp/generator/eclipse.py
@@ -141,7 +141,7 @@ def GetAllIncludeDirectories(target_list, target_dicts,
             compiler_includes_list.append(include_dir)
 
       # Find standard gyp include dirs.
-      if config.has_key('include_dirs'):
+      if 'include_dirs' in config:
         include_dirs = config['include_dirs']
         for shared_intermediate_dir in shared_intermediate_dirs:
           for include_dir in include_dirs:
diff --git a/gyp/pylib/gyp/generator/make.py b/gyp/pylib/gyp/generator/make.py
index fe801b77ce..8f7082ab45 100644
--- a/gyp/pylib/gyp/generator/make.py
+++ b/gyp/pylib/gyp/generator/make.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 # Copyright (c) 2013 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -1381,8 +1382,8 @@ def ComputeOutputBasename(self, spec):
     elif self.type == 'none':
       target = '%s.stamp' % target
     elif self.type != 'executable':
-      print ("ERROR: What output file should be generated?",
-             "type", self.type, "target", target)
+      print(("ERROR: What output file should be generated?",
+             "type", self.type, "target", target))
 
     target_prefix = spec.get('product_prefix', target_prefix)
     target = spec.get('product_name', target)
@@ -1638,7 +1639,7 @@ def WriteTarget(self, spec, configs, deps, link_deps, bundle_deps,
       self.WriteDoCmd([self.output_binary], deps, 'touch', part_of_all,
                       postbuilds=postbuilds)
     else:
-      print "WARNING: no output for", self.type, target
+      print("WARNING: no output for", self.type, target)
 
     # Add an alias for each target (if there are any outputs).
     # Installable target aliases are created below.
@@ -1992,7 +1993,7 @@ def PerformBuild(data, configurations, params):
     if options.toplevel_dir and options.toplevel_dir != '.':
       arguments += '-C', options.toplevel_dir
     arguments.append('BUILDTYPE=' + config)
-    print 'Building [%s]: %s' % (config, arguments)
+    print('Building [%s]: %s' % (config, arguments))
     subprocess.check_call(arguments)
 
 
diff --git a/gyp/pylib/gyp/generator/msvs.py b/gyp/pylib/gyp/generator/msvs.py
index 3901ba9416..344cd1d18c 100644
--- a/gyp/pylib/gyp/generator/msvs.py
+++ b/gyp/pylib/gyp/generator/msvs.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -755,8 +756,8 @@ def _Replace(match):
     # the VCProj but cause the same problem on the final command-line. Moving
     # the item to the end of the list does works, but that's only possible if
     # there's only one such item. Let's just warn the user.
-    print >> sys.stderr, ('Warning: MSVS may misinterpret the odd number of ' +
-                          'quotes in ' + s)
+    print(('Warning: MSVS may misinterpret the odd number of ' +
+                          'quotes in ' + s), file=sys.stderr)
   return s
 
 
@@ -1949,7 +1950,7 @@ def PerformBuild(data, configurations, params):
 
   for config in configurations:
     arguments = [devenv, sln_path, '/Build', config]
-    print 'Building [%s]: %s' % (config, arguments)
+    print('Building [%s]: %s' % (config, arguments))
     rtn = subprocess.check_call(arguments)
 
 
@@ -2031,7 +2032,7 @@ def GenerateOutput(target_list, target_dicts, data, params):
     if generator_flags.get('msvs_error_on_missing_sources', False):
       raise GypError(error_message)
     else:
-      print >> sys.stdout, "Warning: " + error_message
+      print("Warning: " + error_message, file=sys.stdout)
 
 
 def _GenerateMSBuildFiltersFile(filters_path, source_files,
@@ -2729,7 +2730,7 @@ def _GetMSBuildPropertySheets(configurations):
   props_specified = False
   for name, settings in sorted(configurations.iteritems()):
     configuration = _GetConfigurationCondition(name, settings)
-    if settings.has_key('msbuild_props'):
+    if 'msbuild_props' in settings:
       additional_props[configuration] = _FixPaths(settings['msbuild_props'])
       props_specified = True
     else:
@@ -2782,7 +2783,7 @@ def _ConvertMSVSBuildAttributes(spec, config, build_file):
     elif a == 'ConfigurationType':
       msbuild_attributes[a] = _ConvertMSVSConfigurationType(msvs_attributes[a])
     else:
-      print 'Warning: Do not know how to convert MSVS attribute ' + a
+      print('Warning: Do not know how to convert MSVS attribute ' + a)
   return msbuild_attributes
 
 
diff --git a/gyp/pylib/gyp/generator/ninja.py b/gyp/pylib/gyp/generator/ninja.py
index a00573ebf2..1fc00e1f98 100644
--- a/gyp/pylib/gyp/generator/ninja.py
+++ b/gyp/pylib/gyp/generator/ninja.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 # Copyright (c) 2013 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -472,8 +473,8 @@ def WriteSpec(self, spec, config_name, generator_flags):
         if self.flavor != 'mac' or len(self.archs) == 1:
           link_deps += [self.GypPathToNinja(o) for o in obj_outputs]
         else:
-          print "Warning: Actions/rules writing object files don't work with " \
-                "multiarch targets, dropping. (target %s)" % spec['target_name']
+          print("Warning: Actions/rules writing object files don't work with " \
+                "multiarch targets, dropping. (target %s)" % spec['target_name'])
     elif self.flavor == 'mac' and len(self.archs) > 1:
       link_deps = collections.defaultdict(list)
 
@@ -2376,7 +2377,7 @@ def PerformBuild(data, configurations, params):
   for config in configurations:
     builddir = os.path.join(options.toplevel_dir, 'out', config)
     arguments = ['ninja', '-C', builddir]
-    print 'Building [%s]: %s' % (config, arguments)
+    print('Building [%s]: %s' % (config, arguments))
     subprocess.check_call(arguments)
 
 
@@ -2413,7 +2414,7 @@ def GenerateOutput(target_list, target_dicts, data, params):
           arglists.append(
               (target_list, target_dicts, data, params, config_name))
         pool.map(CallGenerateOutputForConfig, arglists)
-      except KeyboardInterrupt, e:
+      except KeyboardInterrupt as e:
         pool.terminate()
         raise e
     else:
diff --git a/gyp/pylib/gyp/generator/xcode.py b/gyp/pylib/gyp/generator/xcode.py
index 0e3fb9301e..63f80d7657 100644
--- a/gyp/pylib/gyp/generator/xcode.py
+++ b/gyp/pylib/gyp/generator/xcode.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -128,7 +129,7 @@ def __init__(self, gyp_path, path, build_file_dict):
     try:
       os.makedirs(self.path)
       self.created_dir = True
-    except OSError, e:
+    except OSError as e:
       if e.errno != errno.EEXIST:
         raise
 
@@ -453,7 +454,7 @@ def Write(self):
       same = False
       try:
         same = filecmp.cmp(pbxproj_path, new_pbxproj_path, False)
-      except OSError, e:
+      except OSError as e:
         if e.errno != errno.ENOENT:
           raise
 
@@ -472,10 +473,10 @@ def Write(self):
         #
         # No way to get the umask without setting a new one?  Set a safe one
         # and then set it back to the old value.
-        umask = os.umask(077)
+        umask = os.umask(0o77)
         os.umask(umask)
 
-        os.chmod(new_pbxproj_path, 0666 & ~umask)
+        os.chmod(new_pbxproj_path, 0o666 & ~umask)
         os.rename(new_pbxproj_path, pbxproj_path)
 
     except Exception:
@@ -576,7 +577,7 @@ def PerformBuild(data, configurations, params):
   for config in configurations:
     arguments = ['xcodebuild', '-project', xcodeproj_path]
     arguments += ['-configuration', config]
-    print "Building [%s]: %s" % (config, arguments)
+    print("Building [%s]: %s" % (config, arguments))
     subprocess.check_call(arguments)
 
 
@@ -736,7 +737,7 @@ def GenerateOutput(target_list, target_dicts, data, params):
       xctarget_type = gyp.xcodeproj_file.PBXNativeTarget
       try:
         target_properties['productType'] = _types[type_bundle_key]
-      except KeyError, e:
+      except KeyError as e:
         gyp.common.ExceptionAppend(e, "-- unknown product type while "
                                    "writing target %s" % target_name)
         raise
diff --git a/gyp/pylib/gyp/input.py b/gyp/pylib/gyp/input.py
index 10f6e0dba1..f55619f3b0 100644
--- a/gyp/pylib/gyp/input.py
+++ b/gyp/pylib/gyp/input.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -249,10 +250,10 @@ def LoadOneBuildFile(build_file_path, data, aux_data, includes,
     else:
       build_file_data = eval(build_file_contents, {'__builtins__': None},
                              None)
-  except SyntaxError, e:
+  except SyntaxError as e:
     e.filename = build_file_path
     raise
-  except Exception, e:
+  except Exception as e:
     gyp.common.ExceptionAppend(e, 'while reading ' + build_file_path)
     raise
 
@@ -272,7 +273,7 @@ def LoadOneBuildFile(build_file_path, data, aux_data, includes,
       else:
         LoadBuildFileIncludesIntoDict(build_file_data, build_file_path, data,
                                       aux_data, None, check)
-    except Exception, e:
+    except Exception as e:
       gyp.common.ExceptionAppend(e,
                                  'while reading includes of ' + build_file_path)
       raise
@@ -474,7 +475,7 @@ def LoadTargetBuildFile(build_file_path, data, aux_data, variables, includes,
       try:
         LoadTargetBuildFile(dependency, data, aux_data, variables,
                             includes, depth, check, load_dependencies)
-      except Exception, e:
+      except Exception as e:
         gyp.common.ExceptionAppend(
           e, 'while loading dependencies of %s' % build_file_path)
         raise
@@ -517,12 +518,12 @@ def CallLoadTargetBuildFile(global_flags,
     return (build_file_path,
             build_file_data,
             dependencies)
-  except GypError, e:
+  except GypError as e:
     sys.stderr.write("gyp: %s\n" % e)
     return None
-  except Exception, e:
-    print >>sys.stderr, 'Exception:', e
-    print >>sys.stderr, traceback.format_exc()
+  except Exception as e:
+    print('Exception:', e, file=sys.stderr)
+    print(traceback.format_exc(), file=sys.stderr)
     return None
 
 
@@ -612,7 +613,7 @@ def LoadTargetBuildFilesParallel(build_files, data, variables, includes, depth,
           args = (global_flags, dependency,
                   variables, includes, depth, check, generator_input_info),
           callback = parallel_state.LoadTargetBuildFileCallback)
-  except KeyboardInterrupt, e:
+  except KeyboardInterrupt as e:
     parallel_state.pool.terminate()
     raise e
 
@@ -912,7 +913,7 @@ def ExpandVariables(input, phase, variables, build_file):
                                  stderr=subprocess.PIPE,
                                  stdin=subprocess.PIPE,
                                  cwd=build_file_dir)
-          except Exception, e:
+          except Exception as e:
             raise GypError("%s while executing command '%s' in %s" %
                            (e, contents, build_file))
 
@@ -1097,13 +1098,13 @@ def EvalSingleCondition(
     if eval(ast_code, {'__builtins__': None}, variables):
       return true_dict
     return false_dict
-  except SyntaxError, e:
+  except SyntaxError as e:
     syntax_error = SyntaxError('%s while evaluating condition \'%s\' in %s '
                                'at character %d.' %
                                (str(e.args[0]), e.text, build_file, e.offset),
                                e.filename, e.lineno, e.offset, e.text)
     raise syntax_error
-  except NameError, e:
+  except NameError as e:
     gyp.common.ExceptionAppend(e, 'while evaluating condition \'%s\' in %s' %
                                (cond_expr_expanded, build_file))
     raise GypError(e)
@@ -1858,7 +1859,7 @@ def VerifyNoGYPFileCircularDependencies(targets):
     for dependency in target_dependencies:
       try:
         dependency_build_file = gyp.common.BuildFile(dependency)
-      except GypError, e:
+      except GypError as e:
         gyp.common.ExceptionAppend(
             e, 'while computing dependencies of .gyp file %s' % build_file)
         raise
@@ -2781,7 +2782,7 @@ def Load(build_files, variables, includes, depth, generator_input_info, check,
       try:
         LoadTargetBuildFile(build_file, data, aux_data,
                             variables, includes, depth, check, True)
-      except Exception, e:
+      except Exception as e:
         gyp.common.ExceptionAppend(e, 'while trying to load %s' % build_file)
         raise
 
diff --git a/gyp/pylib/gyp/mac_tool.py b/gyp/pylib/gyp/mac_tool.py
index eeeaceb0c7..36203801c8 100755
--- a/gyp/pylib/gyp/mac_tool.py
+++ b/gyp/pylib/gyp/mac_tool.py
@@ -7,6 +7,7 @@
 
 These functions are executed via gyp-mac-tool when using the Makefile generator.
 """
+from __future__ import print_function
 
 import fcntl
 import fnmatch
@@ -243,7 +244,7 @@ def ExecFilterLibtool(self, *cmd_list):
     _, err = libtoolout.communicate()
     for line in err.splitlines():
       if not libtool_re.match(line) and not libtool_re5.match(line):
-        print >>sys.stderr, line
+        print(line, file=sys.stderr)
     # Unconditionally touch the output .a file on the command line if present
     # and the command succeeded. A bit hacky.
     if not libtoolout.returncode:
@@ -440,8 +441,8 @@ def _FindProvisioningProfile(self, profile, bundle_identifier):
     profiles_dir = os.path.join(
         os.environ['HOME'], 'Library', 'MobileDevice', 'Provisioning Profiles')
     if not os.path.isdir(profiles_dir):
-      print >>sys.stderr, (
-          'cannot find mobile provisioning for %s' % bundle_identifier)
+      print((
+          'cannot find mobile provisioning for %s' % bundle_identifier), file=sys.stderr)
       sys.exit(1)
     provisioning_profiles = None
     if profile:
@@ -462,8 +463,8 @@ def _FindProvisioningProfile(self, profile, bundle_identifier):
           valid_provisioning_profiles[app_id_pattern] = (
               profile_path, profile_data, team_identifier)
     if not valid_provisioning_profiles:
-      print >>sys.stderr, (
-          'cannot find mobile provisioning for %s' % bundle_identifier)
+      print((
+          'cannot find mobile provisioning for %s' % bundle_identifier), file=sys.stderr)
       sys.exit(1)
     # If the user has multiple provisioning profiles installed that can be
     # used for ${bundle_identifier}, pick the most specific one (ie. the
diff --git a/gyp/pylib/gyp/win_tool.py b/gyp/pylib/gyp/win_tool.py
index bb6f1ea436..85a7926095 100755
--- a/gyp/pylib/gyp/win_tool.py
+++ b/gyp/pylib/gyp/win_tool.py
@@ -8,6 +8,7 @@
 
 These functions are executed via gyp-win-tool when using the ninja generator.
 """
+from __future__ import print_function
 
 import os
 import re
@@ -126,7 +127,7 @@ def ExecLinkWrapper(self, arch, use_separate_mspdbsrv, *args):
       if (not line.startswith('   Creating library ') and
           not line.startswith('Generating code') and
           not line.startswith('Finished generating code')):
-        print line
+        print(line)
     return link.returncode
 
   def ExecLinkWithManifests(self, arch, embed_manifest, out, ldcmd, resname,
@@ -215,7 +216,7 @@ def ExecManifestWrapper(self, arch, *args):
     out, _ = popen.communicate()
     for line in out.splitlines():
       if line and 'manifest authoring warning 81010002' not in line:
-        print line
+        print(line)
     return popen.returncode
 
   def ExecManifestToRc(self, arch, *args):
@@ -255,7 +256,7 @@ def ExecMidlWrapper(self, arch, outdir, tlb, h, dlldata, iid, proxy, idl,
                      for x in lines if x.startswith(prefixes))
     for line in lines:
       if not line.startswith(prefixes) and line not in processing:
-        print line
+        print(line)
     return popen.returncode
 
   def ExecAsmWrapper(self, arch, *args):
@@ -269,7 +270,7 @@ def ExecAsmWrapper(self, arch, *args):
           not line.startswith('Microsoft (R) Macro Assembler') and
           not line.startswith(' Assembling: ') and
           line):
-        print line
+        print(line)
     return popen.returncode
 
   def ExecRcWrapper(self, arch, *args):
@@ -283,7 +284,7 @@ def ExecRcWrapper(self, arch, *args):
       if (not line.startswith('Microsoft (R) Windows (R) Resource Compiler') and
           not line.startswith('Copyright (C) Microsoft Corporation') and
           line):
-        print line
+        print(line)
     return popen.returncode
 
   def ExecActionWrapper(self, arch, rspfile, *dir):
diff --git a/gyp/pylib/gyp/xcode_emulation.py b/gyp/pylib/gyp/xcode_emulation.py
index 69f7d97cfa..cbd589b43b 100644
--- a/gyp/pylib/gyp/xcode_emulation.py
+++ b/gyp/pylib/gyp/xcode_emulation.py
@@ -6,6 +6,7 @@
 This module contains classes that help to emulate xcodebuild behavior on top of
 other build systems, such as make and ninja.
 """
+from __future__ import print_function
 
 import copy
 import gyp.common
@@ -73,7 +74,7 @@ def _ExpandArchs(self, archs, sdkroot):
             if arch not in expanded_archs:
               expanded_archs.append(arch)
         except KeyError as e:
-          print 'Warning: Ignoring unsupported variable "%s".' % variable
+          print('Warning: Ignoring unsupported variable "%s".' % variable)
       elif arch not in expanded_archs:
         expanded_archs.append(arch)
     return expanded_archs
@@ -194,8 +195,8 @@ def _ConvertConditionalKeys(self, configname):
           new_key = key.split("[")[0]
           settings[new_key] = settings[key]
       else:
-        print 'Warning: Conditional keys not implemented, ignoring:', \
-              ' '.join(conditional_keys)
+        print('Warning: Conditional keys not implemented, ignoring:', \
+              ' '.join(conditional_keys))
       del settings[key]
 
   def _Settings(self):
@@ -213,7 +214,7 @@ def _Appendf(self, lst, test_key, format_str, default=None):
 
   def _WarnUnimplemented(self, test_key):
     if test_key in self._Settings():
-      print 'Warning: Ignoring not yet implemented key "%s".' % test_key
+      print('Warning: Ignoring not yet implemented key "%s".' % test_key)
 
   def IsBinaryOutputFormat(self, configname):
     default = "binary" if self.isIOS else "xml"
@@ -997,8 +998,8 @@ def _GetIOSPostbuilds(self, configname, output_binary):
     unimpl = ['OTHER_CODE_SIGN_FLAGS']
     unimpl = set(unimpl) & set(self.xcode_settings[configname].keys())
     if unimpl:
-      print 'Warning: Some codesign keys not implemented, ignoring: %s' % (
-          ', '.join(sorted(unimpl)))
+      print('Warning: Some codesign keys not implemented, ignoring: %s' % (
+          ', '.join(sorted(unimpl))))
 
     return ['%s code-sign-bundle "%s" "%s" "%s" "%s"' % (
         os.path.join('${TARGET_BUILD_DIR}', 'gyp-mac-tool'), key,
@@ -1597,7 +1598,7 @@ def GetEdges(node):
     order = gyp.common.TopologicallySorted(env.keys(), GetEdges)
     order.reverse()
     return order
-  except gyp.common.CycleError, e:
+  except gyp.common.CycleError as e:
     raise GypError(
         'Xcode environment variables are cyclically dependent: ' + str(e.nodes))
 
diff --git a/gyp/pylib/gyp/xcode_ninja.py b/gyp/pylib/gyp/xcode_ninja.py
index 3820d6bf04..d781471005 100644
--- a/gyp/pylib/gyp/xcode_ninja.py
+++ b/gyp/pylib/gyp/xcode_ninja.py
@@ -28,7 +28,7 @@ def _WriteWorkspace(main_gyp, sources_gyp, params):
     workspace_path = os.path.join(options.generator_output, workspace_path)
   try:
     os.makedirs(workspace_path)
-  except OSError, e:
+  except OSError as e:
     if e.errno != errno.EEXIST:
       raise
   output_string = '<?xml version="1.0" encoding="UTF-8"?>\n' + \
diff --git a/gyp/pylib/gyp/xcodeproj_file.py b/gyp/pylib/gyp/xcodeproj_file.py
index d08b7f7770..712eefe3f8 100644
--- a/gyp/pylib/gyp/xcodeproj_file.py
+++ b/gyp/pylib/gyp/xcodeproj_file.py
@@ -691,7 +691,7 @@ def _XCKVPrint(self, file, tabs, key, value):
           printable_value[0] == '"' and printable_value[-1] == '"':
         printable_value = printable_value[1:-1]
       printable += printable_key + ' = ' + printable_value + ';' + after_kv
-    except TypeError, e:
+    except TypeError as e:
       gyp.common.ExceptionAppend(e,
                                  'while printing key "%s"' % key)
       raise
diff --git a/gyp/tools/graphviz.py b/gyp/tools/graphviz.py
index 326ae221cf..dcf7c765e5 100755
--- a/gyp/tools/graphviz.py
+++ b/gyp/tools/graphviz.py
@@ -7,6 +7,7 @@
 """Using the JSON dumped by the dump-dependency-json generator,
 generate input suitable for graphviz to render a dependency graph of
 targets."""
+from __future__ import print_function
 
 import collections
 import json
@@ -50,9 +51,9 @@ def WriteGraph(edges):
     build_file, target_name, toolset = ParseTarget(src)
     files[build_file].append(src)
 
-  print 'digraph D {'
-  print '  fontsize=8'  # Used by subgraphs.
-  print '  node [fontsize=8]'
+  print('digraph D {')
+  print('  fontsize=8')  # Used by subgraphs.
+  print('  node [fontsize=8]')
 
   # Output nodes by file.  We must first write out each node within
   # its file grouping before writing out any edges that may refer
@@ -63,31 +64,31 @@ def WriteGraph(edges):
       # the display by making it a box without an internal node.
       target = targets[0]
       build_file, target_name, toolset = ParseTarget(target)
-      print '  "%s" [shape=box, label="%s\\n%s"]' % (target, filename,
-                                                     target_name)
+      print('  "%s" [shape=box, label="%s\\n%s"]' % (target, filename,
+                                                     target_name))
     else:
       # Group multiple nodes together in a subgraph.
-      print '  subgraph "cluster_%s" {' % filename
-      print '    label = "%s"' % filename
+      print('  subgraph "cluster_%s" {' % filename)
+      print('    label = "%s"' % filename)
       for target in targets:
         build_file, target_name, toolset = ParseTarget(target)
-        print '    "%s" [label="%s"]' % (target, target_name)
-      print '  }'
+        print('    "%s" [label="%s"]' % (target, target_name))
+      print('  }')
 
   # Now that we've placed all the nodes within subgraphs, output all
   # the edges between nodes.
   for src, dsts in edges.items():
     for dst in dsts:
-      print '  "%s" -> "%s"' % (src, dst)
+      print('  "%s" -> "%s"' % (src, dst))
 
-  print '}'
+  print('}')
 
 
 def main():
   if len(sys.argv) < 2:
-    print >>sys.stderr, __doc__
-    print >>sys.stderr
-    print >>sys.stderr, 'usage: %s target1 target2...' % (sys.argv[0])
+    print(__doc__, file=sys.stderr)
+    print(file=sys.stderr)
+    print('usage: %s target1 target2...' % (sys.argv[0]), file=sys.stderr)
     return 1
 
   edges = LoadEdges('dump.json', sys.argv[1:])
diff --git a/gyp/tools/pretty_gyp.py b/gyp/tools/pretty_gyp.py
index c51d35872c..8111224595 100755
--- a/gyp/tools/pretty_gyp.py
+++ b/gyp/tools/pretty_gyp.py
@@ -5,6 +5,7 @@
 # found in the LICENSE file.
 
 """Pretty-prints the contents of a GYP file."""
+from __future__ import print_function
 
 import sys
 import re
@@ -119,22 +120,22 @@ def prettyprint_input(lines):
   last_line = ""
   for line in lines:
     if COMMENT_RE.match(line):
-      print line
+      print(line)
     else:
       line = line.strip('\r\n\t ')  # Otherwise doesn't strip \r on Unix.
       if len(line) > 0:
         (brace_diff, after) = count_braces(line)
         if brace_diff != 0:
           if after:
-            print " " * (basic_offset * indent) + line
+            print(" " * (basic_offset * indent) + line)
             indent += brace_diff
           else:
             indent += brace_diff
-            print " " * (basic_offset * indent) + line
+            print(" " * (basic_offset * indent) + line)
         else:
-          print " " * (basic_offset * indent) + line
+          print(" " * (basic_offset * indent) + line)
       else:
-        print ""
+        print("")
       last_line = line
 
 
diff --git a/gyp/tools/pretty_sln.py b/gyp/tools/pretty_sln.py
index ca8cf4ad3f..64a9ec2bf6 100755
--- a/gyp/tools/pretty_sln.py
+++ b/gyp/tools/pretty_sln.py
@@ -11,6 +11,7 @@
 
    Then it outputs a possible build order.
 """
+from __future__ import print_function
 
 __author__ = 'nsylvain (Nicolas Sylvain)'
 
@@ -26,7 +27,7 @@ def BuildProject(project, built, projects, deps):
   for dep in deps[project]:
     if dep not in built:
       BuildProject(dep, built, projects, deps)
-  print project
+  print(project)
   built.append(project)
 
 def ParseSolution(solution_file):
@@ -100,44 +101,44 @@ def ParseSolution(solution_file):
   return (projects, dependencies)
 
 def PrintDependencies(projects, deps):
-  print "---------------------------------------"
-  print "Dependencies for all projects"
-  print "---------------------------------------"
-  print "--                                   --"
+  print("---------------------------------------")
+  print("Dependencies for all projects")
+  print("---------------------------------------")
+  print("--                                   --")
 
   for (project, dep_list) in sorted(deps.items()):
-    print "Project : %s" % project
-    print "Path : %s" % projects[project][0]
+    print("Project : %s" % project)
+    print("Path : %s" % projects[project][0])
     if dep_list:
       for dep in dep_list:
-        print "  - %s" % dep
-    print ""
+        print("  - %s" % dep)
+    print("")
 
-  print "--                                   --"
+  print("--                                   --")
 
 def PrintBuildOrder(projects, deps):
-  print "---------------------------------------"
-  print "Build order                            "
-  print "---------------------------------------"
-  print "--                                   --"
+  print("---------------------------------------")
+  print("Build order                            ")
+  print("---------------------------------------")
+  print("--                                   --")
 
   built = []
   for (project, _) in sorted(deps.items()):
     if project not in built:
       BuildProject(project, built, projects, deps)
 
-  print "--                                   --"
+  print("--                                   --")
 
 def PrintVCProj(projects):
 
   for project in projects:
-    print "-------------------------------------"
-    print "-------------------------------------"
-    print project
-    print project
-    print project
-    print "-------------------------------------"
-    print "-------------------------------------"
+    print("-------------------------------------")
+    print("-------------------------------------")
+    print(project)
+    print(project)
+    print(project)
+    print("-------------------------------------")
+    print("-------------------------------------")
 
     project_path = os.path.abspath(os.path.join(os.path.dirname(sys.argv[1]),
                                                 projects[project][2]))
@@ -153,7 +154,7 @@ def PrintVCProj(projects):
 def main():
   # check if we have exactly 1 parameter.
   if len(sys.argv) < 2:
-    print 'Usage: %s "c:\\path\\to\\project.sln"' % sys.argv[0]
+    print('Usage: %s "c:\\path\\to\\project.sln"' % sys.argv[0])
     return 1
 
   (projects, deps) = ParseSolution(sys.argv[1])
diff --git a/gyp/tools/pretty_vcproj.py b/gyp/tools/pretty_vcproj.py
index 6099bd7cc4..c96ba061ef 100755
--- a/gyp/tools/pretty_vcproj.py
+++ b/gyp/tools/pretty_vcproj.py
@@ -11,6 +11,7 @@
 
    It outputs the resulting xml to stdout.
 """
+from __future__ import print_function
 
 __author__ = 'nsylvain (Nicolas Sylvain)'
 
@@ -61,7 +62,7 @@ def get_string(node):
 def PrettyPrintNode(node, indent=0):
   if node.nodeType == Node.TEXT_NODE:
     if node.data.strip():
-      print '%s%s' % (' '*indent, node.data.strip())
+      print('%s%s' % (' '*indent, node.data.strip()))
     return
 
   if node.childNodes:
@@ -73,23 +74,23 @@ def PrettyPrintNode(node, indent=0):
 
   # Print the main tag
   if attr_count == 0:
-    print '%s<%s>' % (' '*indent, node.nodeName)
+    print('%s<%s>' % (' '*indent, node.nodeName))
   else:
-    print '%s<%s' % (' '*indent, node.nodeName)
+    print('%s<%s' % (' '*indent, node.nodeName))
 
     all_attributes = []
     for (name, value) in node.attributes.items():
       all_attributes.append((name, value))
       all_attributes.sort(CmpTuple())
     for (name, value) in all_attributes:
-      print '%s  %s="%s"' % (' '*indent, name, value)
-    print '%s>' % (' '*indent)
+      print('%s  %s="%s"' % (' '*indent, name, value))
+    print('%s>' % (' '*indent))
   if node.nodeValue:
-    print '%s  %s' % (' '*indent, node.nodeValue)
+    print('%s  %s' % (' '*indent, node.nodeValue))
 
   for sub_node in node.childNodes:
     PrettyPrintNode(sub_node, indent=indent+2)
-  print '%s</%s>' % (' '*indent, node.nodeName)
+  print('%s</%s>' % (' '*indent, node.nodeName))
 
 
 def FlattenFilter(node):
diff --git a/test/fixtures/test-charmap.py b/test/fixtures/test-charmap.py
index d9fa6fb25e..b752f0bbbf 100644
--- a/test/fixtures/test-charmap.py
+++ b/test/fixtures/test-charmap.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 import sys
 import locale
 
@@ -14,9 +15,9 @@ def main():
     'cp1252': u'Lat\u012Bna',
     'cp932': u'\u306b\u307b\u3093\u3054'
   }
-  if textmap.has_key(encoding):
-    print textmap[encoding]
+  if encoding in textmap:
+    print(textmap[encoding])
   return True
 
 if __name__ == '__main__':
-  print main()
+  print(main())