Fix tests in utils

IPython/testing/plugin/ipdoctest.py

@@ -117,7 +117,7 b' class DocTestFinder(doctest.DocTestFinder):'
         elif isinstance(object, property):
             return True # [XX] no way not be sure.
         else:
-            raise ValueError("object must be a class or function")
+            raise ValueError("object must be a class or function, got %r" % object)
 
     def _find(self, tests, obj, name, module, source_lines, globs, seen):
         """

IPython/utils/frame.py

@@ -40,7 +40,7 b' def extract_vars(*names,**kw):'
 
         In [2]: def func(x):
            ...:     y = 1
-           ...:     print sorted(extract_vars('x','y').items())
+           ...:     print(sorted(extract_vars('x','y').items()))
            ...:
 
         In [3]: func('hello')

IPython/utils/jsonutil.py

@@ -173,7 +173,7 b' def json_clean(obj):'
     --------
     >>> json_clean(4)
     4
-    >>> json_clean(range(10))
+    >>> json_clean(list(range(10)))
     [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
     >>> sorted(json_clean(dict(x=1, y=2)).items())
     [('x', 1), ('y', 2)]

IPython/utils/py3compat.py

@@ -93,8 +93,8 b' if sys.version_info[0] >= 3:'
     
     open = orig_open
     xrange = range
-    iteritems = dict.items
-    itervalues = dict.values
+    def iteritems(d): return iter(d.items())
+    def itervalues(d): return iter(d.values())
     
     MethodType = types.MethodType
     
@@ -170,8 +170,8 b' else:'
             self.f.close()
     
     xrange = xrange
-    iteritems = dict.iteritems
-    itervalues = dict.itervalues
+    def iteritems(d): return d.iteritems()
+    def itervalues(d): return d.itervalues()
 
     def MethodType(func, instance):
         return types.MethodType(func, instance, type(instance))

IPython/utils/tests/test_path.py

@@ -116,7 +116,7 b' def teardown_environment():'
     os.chdir(old_wd)
     reload(path)
 
-    for key in env.keys():
+    for key in list(env):
         if key not in oldenv:
             del env[key]
     env.update(oldenv)
@@ -505,8 +505,8 b' class TestShellGlob(object):'
 
     @classmethod
     def setUpClass(cls):
-        cls.filenames_start_with_a = map('a{0}'.format, range(3))
-        cls.filenames_end_with_b = map('{0}b'.format, range(3))
+        cls.filenames_start_with_a = ['a0', 'a1', 'a2']
+        cls.filenames_end_with_b = ['0b', '1b', '2b']
         cls.filenames = cls.filenames_start_with_a + cls.filenames_end_with_b
         cls.tempdir = TemporaryDirectory()
         td = cls.tempdir.name

IPython/utils/tests/test_traitlets.py

@@ -148,16 +148,16 b' class TestTraitType(TestCase):'
 
         a = A()
         self.assertEqual(a._trait_values, {})
-        self.assertEqual(a._trait_dyn_inits.keys(), ['x'])
+        self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
         self.assertEqual(a.x, 11)
         self.assertEqual(a._trait_values, {'x': 11})
         b = B()
         self.assertEqual(b._trait_values, {'x': 20})
-        self.assertEqual(a._trait_dyn_inits.keys(), ['x'])
+        self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
         self.assertEqual(b.x, 20)
         c = C()
         self.assertEqual(c._trait_values, {})
-        self.assertEqual(a._trait_dyn_inits.keys(), ['x'])
+        self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
         self.assertEqual(c.x, 21)
         self.assertEqual(c._trait_values, {'x': 21})
         # Ensure that the base class remains unmolested when the _default
@@ -165,7 +165,7 b' class TestTraitType(TestCase):'
         a = A()
         c = C()
         self.assertEqual(a._trait_values, {})
-        self.assertEqual(a._trait_dyn_inits.keys(), ['x'])
+        self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
         self.assertEqual(a.x, 11)
         self.assertEqual(a._trait_values, {'x': 11})
 
@@ -886,7 +886,7 b' class TestList(TraitTestBase):'
     obj = ListTrait()
 
     _default_value = []
-    _good_values = [[], [1], range(10)]
+    _good_values = [[], [1], list(range(10))]
     _bad_values = [10, [1,'a'], 'a', (1,2)]
 
 class LenListTrait(HasTraits):
@@ -898,8 +898,8 b' class TestLenList(TraitTestBase):'
     obj = LenListTrait()
 
     _default_value = [0]
-    _good_values = [[1], range(2)]
-    _bad_values = [10, [1,'a'], 'a', (1,2), [], range(3)]
+    _good_values = [[1], list(range(2))]
+    _bad_values = [10, [1,'a'], 'a', (1,2), [], list(range(3))]
 
 class TupleTrait(HasTraits):
 

IPython/utils/text.py

@@ -621,7 +621,7 b' def _chunks(l, n):'
 def _find_optimal(rlist , separator_size=2 , displaywidth=80):
     """Calculate optimal info to columnize a list of string"""
     for nrow in range(1, len(rlist)+1) :
-        chk = map(max,_chunks(rlist, nrow))
+        chk = list(map(max,_chunks(rlist, nrow)))
         sumlength = sum(chk)
         ncols = len(chk)
         if sumlength+separator_size*(ncols-1) <= displaywidth :
@@ -694,7 +694,7 b' def compute_item_matrix(items, empty=None, *args, **kwargs) :'
         'rows_numbers': 5})
 
     """
-    info = _find_optimal(map(len, items), *args, **kwargs)
+    info = _find_optimal(list(map(len, items)), *args, **kwargs)
     nrow, ncol = info['rows_numbers'], info['columns_numbers']
     return ([[ _get_or_default(items, c*nrow+i, default=empty) for c in range(ncol) ] for i in range(nrow) ], info)