MAINT: Remove self.assertNotEqual from testing (pandas-dev#16176)

pandas/tests/frame/test_api.py

@@ -247,7 +247,7 @@ def test_deepcopy(self):
         series = cp['A']
         series[:] = 10
         for idx, value in compat.iteritems(series):
-            self.assertNotEqual(self.frame['A'][idx], value)
+            assert self.frame['A'][idx] != value
 
     # ---------------------------------------------------------------------
     # Transposing

pandas/tests/frame/test_indexing.py

@@ -1890,7 +1890,7 @@ def test_nested_exception(self):
         try:
             repr(df)
         except Exception as e:
-            self.assertNotEqual(type(e), UnboundLocalError)
+            assert type(e) != UnboundLocalError
 
     def test_reindex_methods(self):
         df = pd.DataFrame({'x': list(range(5))})

pandas/tests/frame/test_sorting.py

@@ -361,7 +361,7 @@ def test_sort_index_inplace(self):
         df.sort_index(inplace=True)
         expected = frame
         assert_frame_equal(df, expected)
-        self.assertNotEqual(a_id, id(df['A']))
+        assert a_id != id(df['A'])
 
         df = unordered.copy()
         df.sort_index(ascending=False, inplace=True)

pandas/tests/groupby/test_groupby.py

@@ -1032,7 +1032,7 @@ def test_frame_set_name_single(self):
         assert result.index.name == 'A'
 
         result = self.df.groupby('A', as_index=False).mean()
-        self.assertNotEqual(result.index.name, 'A')
+        assert result.index.name != 'A'
 
         result = grouped.agg(np.mean)
         assert result.index.name == 'A'

pandas/tests/indexes/test_base.py

@@ -81,7 +81,7 @@ def test_constructor(self):
         assert index.name == 'name'
         tm.assert_numpy_array_equal(arr, index.values)
         arr[0] = "SOMEBIGLONGSTRING"
-        self.assertNotEqual(index[0], "SOMEBIGLONGSTRING")
+        assert index[0] != "SOMEBIGLONGSTRING"
 
         # what to do here?
         # arr = np.array(5.)

pandas/tests/indexes/test_numeric.py

@@ -653,7 +653,7 @@ def test_constructor(self):
 
         # this should not change index
         arr[0] = val
-        self.assertNotEqual(new_index[0], val)
+        assert new_index[0] != val
 
         # interpret list-like
         expected = Int64Index([5, 0])

pandas/tests/io/formats/test_format.py

@@ -918,7 +918,7 @@ def test_wide_repr(self):
             assert "10 rows x %d columns" % (max_cols - 1) in rep_str
             set_option('display.expand_frame_repr', True)
             wide_repr = repr(df)
-            self.assertNotEqual(rep_str, wide_repr)
+            assert rep_str != wide_repr
 
             with option_context('display.width', 120):
                 wider_repr = repr(df)
@@ -944,7 +944,7 @@ def test_wide_repr_named(self):
             rep_str = repr(df)
             set_option('display.expand_frame_repr', True)
             wide_repr = repr(df)
-            self.assertNotEqual(rep_str, wide_repr)
+            assert rep_str != wide_repr
 
             with option_context('display.width', 150):
                 wider_repr = repr(df)
@@ -966,7 +966,7 @@ def test_wide_repr_multiindex(self):
             rep_str = repr(df)
             set_option('display.expand_frame_repr', True)
             wide_repr = repr(df)
-            self.assertNotEqual(rep_str, wide_repr)
+            assert rep_str != wide_repr
 
             with option_context('display.width', 150):
                 wider_repr = repr(df)
@@ -990,7 +990,7 @@ def test_wide_repr_multiindex_cols(self):
             rep_str = repr(df)
             set_option('display.expand_frame_repr', True)
             wide_repr = repr(df)
-            self.assertNotEqual(rep_str, wide_repr)
+            assert rep_str != wide_repr
 
         with option_context('display.width', 150):
             wider_repr = repr(df)
@@ -1006,7 +1006,7 @@ def test_wide_repr_unicode(self):
             rep_str = repr(df)
             set_option('display.expand_frame_repr', True)
             wide_repr = repr(df)
-            self.assertNotEqual(rep_str, wide_repr)
+            assert rep_str != wide_repr
 
             with option_context('display.width', 150):
                 wider_repr = repr(df)

pandas/tests/io/formats/test_style.py

@@ -85,9 +85,9 @@ def test_deepcopy(self):
 
         self.styler._update_ctx(self.attrs)
         self.styler.highlight_max()
-        self.assertNotEqual(self.styler.ctx, s2.ctx)
+        assert self.styler.ctx != s2.ctx
         assert s2._todo == []
-        self.assertNotEqual(self.styler._todo, s2._todo)
+        assert self.styler._todo != s2._todo
 
     def test_clear(self):
         s = self.df.style.highlight_max()._compute()

pandas/tests/io/test_common.py

@@ -38,7 +38,7 @@ def test_expand_user(self):
         filename = '~/sometest'
         expanded_name = common._expand_user(filename)
 
-        self.assertNotEqual(expanded_name, filename)
+        assert expanded_name != filename
         assert isabs(expanded_name)
         assert os.path.expanduser(filename) == expanded_name
 
@@ -68,7 +68,7 @@ def test_stringify_path_localpath(self):
     def test_get_filepath_or_buffer_with_path(self):
         filename = '~/sometest'
         filepath_or_buffer, _, _ = common.get_filepath_or_buffer(filename)
-        self.assertNotEqual(filepath_or_buffer, filename)
+        assert filepath_or_buffer != filename
         assert isabs(filepath_or_buffer)
         assert os.path.expanduser(filename) == filepath_or_buffer
 

pandas/tests/scalar/test_period.py

@@ -938,8 +938,8 @@ def test_equal_Raises_Value(self):
             self.january1 == self.day
 
     def test_notEqual(self):
-        self.assertNotEqual(self.january1, 1)
-        self.assertNotEqual(self.january1, self.february)
+        assert self.january1 != 1
+        assert self.january1 != self.february
 
     def test_greater(self):
         assert self.february > self.january1

pandas/tests/scalar/test_timedelta.py

@@ -560,7 +560,7 @@ def test_timedelta_hash_equality(self):
 
         # python timedeltas drop ns resolution
         ns_td = Timedelta(1, 'ns')
-        self.assertNotEqual(hash(ns_td), hash(ns_td.to_pytimedelta()))
+        assert hash(ns_td) != hash(ns_td.to_pytimedelta())
 
     def test_implementation_limits(self):
         min_td = Timedelta(Timedelta.min)

pandas/tests/scalar/test_timestamp.py

@@ -873,8 +873,8 @@ def test_comparison(self):
 
         other = Timestamp(stamp + 100)
 
-        self.assertNotEqual(val, other)
-        self.assertNotEqual(val, other)
+        assert val != other
+        assert val != other
         assert val < other
         assert val <= other
         assert other > val
@@ -1375,9 +1375,9 @@ def test_timestamp_compare_with_early_datetime(self):
         assert not stamp == datetime.min
         assert not stamp == datetime(1600, 1, 1)
         assert not stamp == datetime(2700, 1, 1)
-        self.assertNotEqual(stamp, datetime.min)
-        self.assertNotEqual(stamp, datetime(1600, 1, 1))
-        self.assertNotEqual(stamp, datetime(2700, 1, 1))
+        assert stamp != datetime.min
+        assert stamp != datetime(1600, 1, 1)
+        assert stamp != datetime(2700, 1, 1)
         assert stamp > datetime(1600, 1, 1)
         assert stamp >= datetime(1600, 1, 1)
         assert stamp < datetime(2700, 1, 1)

pandas/tests/series/test_missing.py

@@ -1078,8 +1078,8 @@ def test_spline_extrapolate(self):
     def test_spline_smooth(self):
         tm._skip_if_no_scipy()
         s = Series([1, 2, np.nan, 4, 5.1, np.nan, 7])
-        self.assertNotEqual(s.interpolate(method='spline', order=3, s=0)[5],
-                            s.interpolate(method='spline', order=3)[5])
+        assert (s.interpolate(method='spline', order=3, s=0)[5] !=
+                s.interpolate(method='spline', order=3)[5])
 
     def test_spline_interpolation(self):
         tm._skip_if_no_scipy()
@@ -1090,8 +1090,8 @@ def test_spline_interpolation(self):
         expected1 = s.interpolate(method='spline', order=1)
         assert_series_equal(result1, expected1)
 
-    # GH #10633
     def test_spline_error(self):
+        # see gh-10633
         tm._skip_if_no_scipy()
 
         s = pd.Series(np.arange(10) ** 2)

pandas/tests/test_expressions.py

@@ -293,7 +293,7 @@ def testit():
                     if op is not None:
                         result = expr._can_use_numexpr(op, op_str, f, f,
                                                        'evaluate')
-                        self.assertNotEqual(result, f._is_mixed_type)
+                        assert result != f._is_mixed_type
 
                         result = expr.evaluate(op, op_str, f, f,
                                                use_numexpr=True)
@@ -336,7 +336,7 @@ def testit():
 
                     result = expr._can_use_numexpr(op, op_str, f11, f12,
                                                    'evaluate')
-                    self.assertNotEqual(result, f11._is_mixed_type)
+                    assert result != f11._is_mixed_type
 
                     result = expr.evaluate(op, op_str, f11, f12,
                                            use_numexpr=True)

pandas/tests/test_panel.py

@@ -1636,7 +1636,7 @@ def test_swapaxes(self):
             # this works, but return a copy
             result = self.panel.swapaxes('items', 'items')
             assert_panel_equal(self.panel, result)
-            self.assertNotEqual(id(self.panel), id(result))
+            assert id(self.panel) != id(result)
 
     def test_transpose(self):
         with catch_warnings(record=True):

pandas/tests/test_panel4d.py

@@ -888,7 +888,7 @@ def test_swapaxes(self):
             # this works, but return a copy
             result = self.panel4d.swapaxes('items', 'items')
             assert_panel4d_equal(self.panel4d, result)
-            self.assertNotEqual(id(self.panel4d), id(result))
+            assert id(self.panel4d) != id(result)
 
     def test_update(self):
 

pandas/tests/tseries/test_offsets.py

@@ -541,7 +541,7 @@ def test_eq(self):
         offset1 = DateOffset(days=1)
         offset2 = DateOffset(days=365)
 
-        self.assertNotEqual(offset1, offset2)
+        assert offset1 != offset2
 
 
 class TestBusinessDay(Base):
@@ -775,12 +775,11 @@ def testEQ(self):
         for offset in [self.offset1, self.offset2, self.offset3, self.offset4]:
             assert offset == offset
 
-        self.assertNotEqual(BusinessHour(), BusinessHour(-1))
+        assert BusinessHour() != BusinessHour(-1)
         assert BusinessHour(start='09:00') == BusinessHour()
-        self.assertNotEqual(BusinessHour(start='09:00'),
-                            BusinessHour(start='09:01'))
-        self.assertNotEqual(BusinessHour(start='09:00', end='17:00'),
-                            BusinessHour(start='17:00', end='09:01'))
+        assert BusinessHour(start='09:00') != BusinessHour(start='09:01')
+        assert (BusinessHour(start='09:00', end='17:00') !=
+                BusinessHour(start='17:00', end='09:01'))
 
     def test_hash(self):
         for offset in [self.offset1, self.offset2, self.offset3, self.offset4]:
@@ -4362,7 +4361,7 @@ def test_Hour(self):
         assert Hour(3) + Hour(2) == Hour(5)
         assert Hour(3) - Hour(2) == Hour()
 
-        self.assertNotEqual(Hour(4), Hour(1))
+        assert Hour(4) != Hour(1)
 
     def test_Minute(self):
         assertEq(Minute(), datetime(2010, 1, 1), datetime(2010, 1, 1, 0, 1))
@@ -4374,7 +4373,7 @@ def test_Minute(self):
 
         assert Minute(3) + Minute(2) == Minute(5)
         assert Minute(3) - Minute(2) == Minute()
-        self.assertNotEqual(Minute(5), Minute())
+        assert Minute(5) != Minute()
 
     def test_Second(self):
         assertEq(Second(), datetime(2010, 1, 1), datetime(2010, 1, 1, 0, 0, 1))
@@ -4464,8 +4463,8 @@ def test_tick_equalities(self):
             assert t() == t(1)
 
             # not equals
-            self.assertNotEqual(t(3), t(2))
-            self.assertNotEqual(t(3), t(-3))
+            assert t(3) != t(2)
+            assert t(3) != t(-3)
 
     def test_tick_operators(self):
         for t in self.ticks:

pandas/tests/tseries/test_timezones.py

@@ -1191,8 +1191,7 @@ def test_cache_keys_are_distinct_for_pytz_vs_dateutil(self):
             if tz_d is None:
                 # skip timezones that dateutil doesn't know about.
                 continue
-            self.assertNotEqual(tslib._p_tz_cache_key(
-                tz_p), tslib._p_tz_cache_key(tz_d))
+            assert tslib._p_tz_cache_key(tz_p) != tslib._p_tz_cache_key(tz_d)
 
 
 class TestTimeZones(tm.TestCase):