Python 3 compatibility

pylib/gyp/input_test.py

 #!/usr/bin/env python
 
 # Copyright 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.
 
 """Unit tests for the input.py file."""
 
 import gyp.input
 import unittest
 import sys
 
 
 class TestFindCycles(unittest.TestCase):
   def setUp(self):
     self.nodes = {}
     for x in ('a', 'b', 'c', 'd', 'e'):
       self.nodes[x] = gyp.input.DependencyGraphNode(x)
 
   def _create_dependency(self, dependent, dependency):
     dependent.dependencies.append(dependency)
     dependency.dependents.append(dependent)
 
   def test_no_cycle_empty_graph(self):
-    for label, node in self.nodes.iteritems():
+    for label, node in self.nodes.items():
       self.assertEquals([], node.FindCycles())
 
   def test_no_cycle_line(self):
     self._create_dependency(self.nodes['a'], self.nodes['b'])
     self._create_dependency(self.nodes['b'], self.nodes['c'])
     self._create_dependency(self.nodes['c'], self.nodes['d'])
 
-    for label, node in self.nodes.iteritems():
+    for label, node in self.nodes.items():
       self.assertEquals([], node.FindCycles())
 
   def test_no_cycle_dag(self):
     self._create_dependency(self.nodes['a'], self.nodes['b'])
     self._create_dependency(self.nodes['a'], self.nodes['c'])
     self._create_dependency(self.nodes['b'], self.nodes['c'])
 
-    for label, node in self.nodes.iteritems():
+    for label, node in self.nodes.items():
       self.assertEquals([], node.FindCycles())
 
   def test_cycle_self_reference(self):
     self._create_dependency(self.nodes['a'], self.nodes['a'])
 
     self.assertEquals([[self.nodes['a'], self.nodes['a']]],
                       self.nodes['a'].FindCycles())
 
   def test_cycle_two_nodes(self):
     self._create_dependency(self.nodes['a'], self.nodes['b'])
@@ skipping 29 matching lines @@
                         self.nodes['b'],
                         self.nodes['c'],
                         self.nodes['d'],
                         self.nodes['e'],
                         self.nodes['a']]],
                       self.nodes['a'].FindCycles())
 
 
 if __name__ == '__main__':
   unittest.main()