CLN: Remove vestigial references to PY2 in tests

Author: gfyoung

pandas/tests/arithmetic/test_period.py

@@ -1046,34 +1046,26 @@ def test_pi_ops(self):
         exp = pd.Index([0 * off, -1 * off, -2 * off, -3 * off], name='idx')
         tm.assert_index_equal(result, exp)
 
-    @pytest.mark.parametrize('ng', ["str", 1.5])
-    def test_parr_ops_errors(self, ng, box_with_array):
-        idx = PeriodIndex(['2011-01', '2011-02', '2011-03', '2011-04'],
-                          freq='M', name='idx')
+    @pytest.mark.parametrize("ng", ["str", 1.5])
+    @pytest.mark.parametrize("func", [
+        lambda obj, ng: obj + ng,
+        lambda obj, ng: ng + obj,
+        lambda obj, ng: obj - ng,
+        lambda obj, ng: ng - obj,
+        lambda obj, ng: np.add(obj, ng),
+        lambda obj, ng: np.add(ng, obj),
+        lambda obj, ng: np.subtract(obj, ng),
+        lambda obj, ng: np.subtract(ng, obj),
+    ])
+    def test_parr_ops_errors(self, ng, func, box_with_array):
+        idx = PeriodIndex(["2011-01", "2011-02", "2011-03", "2011-04"],
+                          freq="M", name="idx")
         obj = tm.box_expected(idx, box_with_array)
-
-        msg = r"unsupported operand type\(s\)"
-        with pytest.raises(TypeError, match=msg):
-            obj + ng
-
-        with pytest.raises(TypeError):
-            # error message differs between PY2 and 3
-            ng + obj
+        msg = (r"unsupported operand type\(s\)|can only concatenate|"
+               r"must be str|object to str implicitly")
 
         with pytest.raises(TypeError, match=msg):
-            obj - ng
-
-        with pytest.raises(TypeError):
-            np.add(obj, ng)
-
-        with pytest.raises(TypeError):
-            np.add(ng, obj)
-
-        with pytest.raises(TypeError):
-            np.subtract(obj, ng)
-
-        with pytest.raises(TypeError):
-            np.subtract(ng, obj)
+            func(obj, ng)
 
     def test_pi_ops_nat(self):
         idx = PeriodIndex(['2011-01', '2011-02', 'NaT', '2011-04'],

pandas/tests/frame/test_indexing.py

@@ -2581,11 +2581,9 @@ def test_boolean_indexing_mixed(self):
         assert_frame_equal(df2, expected)
 
         df['foo'] = 'test'
-        msg = ("boolean setting on mixed-type|"
-               "not supported between|"
-               "unorderable types")
+        msg = "not supported between instances|unorderable types"
+
         with pytest.raises(TypeError, match=msg):
-            # TODO: This message should be the same in PY2/PY3
             df[df > 0.3] = 1
 
     def test_where(self):

pandas/tests/series/test_repr.py

@@ -203,9 +203,7 @@ def test_index_repr_in_frame_with_nan(self):
 class TestCategoricalRepr(object):
 
     def test_categorical_repr_unicode(self):
-        # GH#21002 if len(index) > 60, sys.getdefaultencoding()=='ascii',
-        # and we are working in PY2, then rendering a Categorical could raise
-        # UnicodeDecodeError by trying to decode when it shouldn't
+        # see gh-21002
 
         class County(StringMixin):
             name = u'San Sebastián'
@@ -214,7 +212,7 @@ class County(StringMixin):
             def __unicode__(self):
                 return self.name + u', ' + self.state
 
-        cat = pd.Categorical([County() for n in range(61)])
+        cat = pd.Categorical([County() for _ in range(61)])
         idx = pd.Index(cat)
         ser = idx.to_series()