Python 3 compatibility

pylib/gyp/xcode_ninja.py

Index: pylib/gyp/xcode_ninja.py
diff --git a/pylib/gyp/xcode_ninja.py b/pylib/gyp/xcode_ninja.py
index bc76ffff4e9b58490903a4122b93065dad88fa89..1d71b8c5f8900648c41fc23e1522f28264af20f0 100644
--- a/pylib/gyp/xcode_ninja.py
+++ b/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' + \
@@ -85,7 +85,7 @@ def _TargetFromSpec(old_spec, params):
         "%s/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)" % ninja_toplevel
 
   if 'configurations' in old_spec:
-    for config in old_spec['configurations'].iterkeys():
+    for config in old_spec['configurations'].keys():
       old_xcode_settings = \
         old_spec['configurations'][config].get('xcode_settings', {})
       if 'IPHONEOS_DEPLOYMENT_TARGET' in old_xcode_settings:
@@ -167,7 +167,7 @@ def CreateWrapper(target_list, target_dicts, data, params):
     params: Dict of global options for gyp.
   """
   orig_gyp = params['build_files'][0]
-  for gyp_name, gyp_dict in data.iteritems():
+  for gyp_name, gyp_dict in data.items():
     if gyp_name == orig_gyp:
       depth = gyp_dict['_DEPTH']
 
@@ -238,7 +238,7 @@ def CreateWrapper(target_list, target_dicts, data, params):
       not generator_flags.get('xcode_ninja_list_excluded_files', True)
 
   sources = []
-  for target, target_dict in target_dicts.iteritems():
+  for target, target_dict in target_dicts.items():
     base = os.path.dirname(target)
     files = target_dict.get('sources', []) + \
             target_dict.get('mac_bundle_resources', [])