MAINT: Rename assertRaisesRegexp to assert_raises_regex (#16119)

pandas/tests/computation/test_eval.py

@@ -29,9 +29,8 @@
 import pandas.core.computation.expr as expr
 import pandas.util.testing as tm
 from pandas.util.testing import (assert_frame_equal, randbool,
-                                 assertRaisesRegexp, assert_numpy_array_equal,
-                                 assert_produces_warning, assert_series_equal,
-                                 slow)
+                                 assert_numpy_array_equal, assert_series_equal,
+                                 assert_produces_warning, slow)
 from pandas.compat import PY3, reduce
 
 _series_frame_incompatible = _bool_ops_syms
@@ -1677,17 +1676,17 @@ def test_result_types2(self):
 
     def test_undefined_func(self):
         df = DataFrame({'a': np.random.randn(10)})
-        with tm.assertRaisesRegexp(ValueError,
-                                   "\"mysin\" is not a supported function"):
+        with tm.assert_raises_regex(
+                ValueError, "\"mysin\" is not a supported function"):
             df.eval("mysin(a)",
                     engine=self.engine,
                     parser=self.parser)
 
     def test_keyword_arg(self):
         df = DataFrame({'a': np.random.randn(10)})
-        with tm.assertRaisesRegexp(TypeError,
-                                   "Function \"sin\" does not support "
-                                   "keyword arguments"):
+        with tm.assert_raises_regex(TypeError,
+                                    "Function \"sin\" does not support "
+                                    "keyword arguments"):
             df.eval("sin(x=a)",
                     engine=self.engine,
                     parser=self.parser)
@@ -1748,16 +1747,16 @@ def test_no_new_globals(self, engine, parser):
 
 def test_invalid_engine():
     tm.skip_if_no_ne()
-    assertRaisesRegexp(KeyError, 'Invalid engine \'asdf\' passed',
-                       pd.eval, 'x + y', local_dict={'x': 1, 'y': 2},
-                       engine='asdf')
+    tm.assert_raises_regex(KeyError, 'Invalid engine \'asdf\' passed',
+                           pd.eval, 'x + y', local_dict={'x': 1, 'y': 2},
+                           engine='asdf')
 
 
 def test_invalid_parser():
     tm.skip_if_no_ne()
-    assertRaisesRegexp(KeyError, 'Invalid parser \'asdf\' passed',
-                       pd.eval, 'x + y', local_dict={'x': 1, 'y': 2},
-                       parser='asdf')
+    tm.assert_raises_regex(KeyError, 'Invalid parser \'asdf\' passed',
+                           pd.eval, 'x + y', local_dict={'x': 1, 'y': 2},
+                           parser='asdf')
 
 
 _parsers = {'python': PythonExprVisitor, 'pytables': pytables.ExprVisitor,
@@ -1795,18 +1794,20 @@ def test_invalid_local_variable_reference(engine, parser):
 
     for _expr in exprs:
         if parser != 'pandas':
-            with tm.assertRaisesRegexp(SyntaxError, "The '@' prefix is only"):
+            with tm.assert_raises_regex(SyntaxError,
+                                        "The '@' prefix is only"):
                 pd.eval(_expr, engine=engine, parser=parser)
         else:
-            with tm.assertRaisesRegexp(SyntaxError, "The '@' prefix is not"):
+            with tm.assert_raises_regex(SyntaxError,
+                                        "The '@' prefix is not"):
                 pd.eval(_expr, engine=engine, parser=parser)
 
 
 def test_numexpr_builtin_raises(engine, parser):
     sin, dotted_line = 1, 2
     if engine == 'numexpr':
-        with tm.assertRaisesRegexp(NumExprClobberingError,
-                                   'Variables in expression .+'):
+        with tm.assert_raises_regex(NumExprClobberingError,
+                                    'Variables in expression .+'):
             pd.eval('sin + dotted_line', engine=engine, parser=parser)
     else:
         res = pd.eval('sin + dotted_line', engine=engine, parser=parser)
@@ -1815,20 +1816,21 @@ def test_numexpr_builtin_raises(engine, parser):
 
 def test_bad_resolver_raises(engine, parser):
     cannot_resolve = 42, 3.0
-    with tm.assertRaisesRegexp(TypeError, 'Resolver of type .+'):
+    with tm.assert_raises_regex(TypeError, 'Resolver of type .+'):
         pd.eval('1 + 2', resolvers=cannot_resolve, engine=engine,
                 parser=parser)
 
 
 def test_empty_string_raises(engine, parser):
     # GH 13139
-    with tm.assertRaisesRegexp(ValueError, 'expr cannot be an empty string'):
+    with tm.assert_raises_regex(ValueError,
+                                'expr cannot be an empty string'):
         pd.eval('', engine=engine, parser=parser)
 
 
 def test_more_than_one_expression_raises(engine, parser):
-    with tm.assertRaisesRegexp(SyntaxError,
-                               'only a single expression is allowed'):
+    with tm.assert_raises_regex(SyntaxError,
+                                'only a single expression is allowed'):
         pd.eval('1 + 1; 2 + 2', engine=engine, parser=parser)
 
 

pandas/tests/dtypes/test_inference.py

@@ -257,7 +257,7 @@ def test_maybe_convert_numeric_infinities(self):
                 tm.assert_numpy_array_equal(out, pos)
 
                 # too many characters
-                with tm.assertRaisesRegexp(ValueError, msg):
+                with tm.assert_raises_regex(ValueError, msg):
                     lib.maybe_convert_numeric(
                         np.array(['foo_' + infinity], dtype=object),
                         na_values, maybe_int)
@@ -320,7 +320,7 @@ def test_convert_numeric_uint64_nan(self):
         for coerce in (True, False):
             for arr, na_values in cases:
                 if coerce:
-                    with tm.assertRaisesRegexp(ValueError, msg):
+                    with tm.assert_raises_regex(ValueError, msg):
                         lib.maybe_convert_numeric(arr, na_values,
                                                   coerce_numeric=coerce)
                 else:
@@ -339,7 +339,7 @@ def test_convert_numeric_int64_uint64(self):
         for coerce in (True, False):
             for case in cases:
                 if coerce:
-                    with tm.assertRaisesRegexp(ValueError, msg):
+                    with tm.assert_raises_regex(ValueError, msg):
                         lib.maybe_convert_numeric(case, set(),
                                                   coerce_numeric=coerce)
                 else:

pandas/tests/frame/test_alter_axes.py

@@ -18,9 +18,7 @@
     is_interval_dtype)
 import pandas as pd
 
-from pandas.util.testing import (assert_series_equal,
-                                 assert_frame_equal,
-                                 assertRaisesRegexp)
+from pandas.util.testing import assert_series_equal, assert_frame_equal
 
 import pandas.util.testing as tm
 
@@ -36,7 +34,7 @@ def test_set_index(self):
         _ = self.mixed_frame['foo']  # noqa
         self.mixed_frame.index = idx
         assert self.mixed_frame['foo'].index is idx
-        with assertRaisesRegexp(ValueError, 'Length mismatch'):
+        with tm.assert_raises_regex(ValueError, 'Length mismatch'):
             self.mixed_frame.index = idx[::2]
 
     def test_set_index_cast(self):
@@ -111,7 +109,8 @@ def test_set_index2(self):
         assert_frame_equal(df3, expected_nodrop)
 
         # corner case
-        with assertRaisesRegexp(ValueError, 'Index has duplicate keys'):
+        with tm.assert_raises_regex(ValueError,
+                                    'Index has duplicate keys'):
             df.set_index('A', verify_integrity=True)
 
         # append
@@ -136,7 +135,8 @@ def test_set_index_nonuniq(self):
                         'C': ['a', 'b', 'c', 'd', 'e'],
                         'D': np.random.randn(5),
                         'E': np.random.randn(5)})
-        with assertRaisesRegexp(ValueError, 'Index has duplicate keys'):
+        with tm.assert_raises_regex(ValueError,
+                                    'Index has duplicate keys'):
             df.set_index('A', verify_integrity=True, inplace=True)
         assert 'A' in df
 
@@ -338,7 +338,7 @@ def test_set_index_empty_column(self):
     def test_set_columns(self):
         cols = Index(np.arange(len(self.mixed_frame.columns)))
         self.mixed_frame.columns = cols
-        with assertRaisesRegexp(ValueError, 'Length mismatch'):
+        with tm.assert_raises_regex(ValueError, 'Length mismatch'):
             self.mixed_frame.columns = cols[::2]
 
     def test_dti_set_index_reindex(self):

pandas/tests/frame/test_analytics.py

@@ -779,7 +779,7 @@ def wrapper(x):
         # assert_series_equal(result, comp)
 
         # bad axis
-        tm.assertRaisesRegexp(ValueError, 'No axis named 2', f, axis=2)
+        tm.assert_raises_regex(ValueError, 'No axis named 2', f, axis=2)
         # make sure works on mixed-type frame
         getattr(self.mixed_frame, name)(axis=0)
         getattr(self.mixed_frame, name)(axis=1)
@@ -1749,7 +1749,7 @@ def test_numpy_round(self):
         tm.assert_frame_equal(out, expected)
 
         msg = "the 'out' parameter is not supported"
-        with tm.assertRaisesRegexp(ValueError, msg):
+        with tm.assert_raises_regex(ValueError, msg):
             np.round(df, decimals=0, out=df)
 
     def test_round_mixed_type(self):
@@ -1897,7 +1897,8 @@ def test_dot(self):
         exp = a.dot(a.iloc[0])
         tm.assert_series_equal(result, exp)
 
-        with tm.assertRaisesRegexp(ValueError, 'Dot product shape mismatch'):
+        with tm.assert_raises_regex(ValueError,
+                                    'Dot product shape mismatch'):
             a.dot(row[:-1])
 
         a = np.random.rand(1, 5)
@@ -1914,7 +1915,7 @@ def test_dot(self):
         df = DataFrame(randn(3, 4), index=[1, 2, 3], columns=lrange(4))
         df2 = DataFrame(randn(5, 3), index=lrange(5), columns=[1, 2, 3])
 
-        with tm.assertRaisesRegexp(ValueError, 'aligned'):
+        with tm.assert_raises_regex(ValueError, 'aligned'):
             df.dot(df2)
 
 
@@ -1986,7 +1987,7 @@ def test_n(self, df_strings, method, n, order):
 
             error_msg = self.dtype_error_msg_template.format(
                 column='b', method=method, dtype='object')
-            with tm.assertRaisesRegexp(TypeError, error_msg):
+            with tm.assert_raises_regex(TypeError, error_msg):
                 getattr(df, method)(n, order)
         else:
             ascending = method == 'nsmallest'
@@ -2003,7 +2004,7 @@ def test_n_error(self, df_main_dtypes, method, columns):
         df = df_main_dtypes
         error_msg = self.dtype_error_msg_template.format(
             column=columns[1], method=method, dtype=df[columns[1]].dtype)
-        with tm.assertRaisesRegexp(TypeError, error_msg):
+        with tm.assert_raises_regex(TypeError, error_msg):
             getattr(df, method)(2, columns)
 
     def test_n_all_dtypes(self, df_main_dtypes):

pandas/tests/frame/test_api.py

@@ -20,8 +20,7 @@
 
 from pandas.util.testing import (assert_almost_equal,
                                  assert_series_equal,
-                                 assert_frame_equal,
-                                 assertRaisesRegexp)
+                                 assert_frame_equal)
 
 import pandas.util.testing as tm
 
@@ -91,11 +90,14 @@ def test_get_axis(self):
         assert f._get_axis(0) is f.index
         assert f._get_axis(1) is f.columns
 
-        assertRaisesRegexp(ValueError, 'No axis named', f._get_axis_number, 2)
-        assertRaisesRegexp(ValueError, 'No axis.*foo', f._get_axis_name, 'foo')
-        assertRaisesRegexp(ValueError, 'No axis.*None', f._get_axis_name, None)
-        assertRaisesRegexp(ValueError, 'No axis named', f._get_axis_number,
-                           None)
+        tm.assert_raises_regex(
+            ValueError, 'No axis named', f._get_axis_number, 2)
+        tm.assert_raises_regex(
+            ValueError, 'No axis.*foo', f._get_axis_name, 'foo')
+        tm.assert_raises_regex(
+            ValueError, 'No axis.*None', f._get_axis_name, None)
+        tm.assert_raises_regex(ValueError, 'No axis named',
+                               f._get_axis_number, None)
 
     def test_keys(self):
         getkeys = self.frame.keys

pandas/tests/frame/test_axis_select_reindex.py

@@ -699,23 +699,23 @@ def test_filter(self):
         tm.assert_frame_equal(filtered, expected)
 
         # pass in None
-        with tm.assertRaisesRegexp(TypeError, 'Must pass'):
+        with tm.assert_raises_regex(TypeError, 'Must pass'):
             self.frame.filter()
-        with tm.assertRaisesRegexp(TypeError, 'Must pass'):
+        with tm.assert_raises_regex(TypeError, 'Must pass'):
             self.frame.filter(items=None)
-        with tm.assertRaisesRegexp(TypeError, 'Must pass'):
+        with tm.assert_raises_regex(TypeError, 'Must pass'):
             self.frame.filter(axis=1)
 
         # test mutually exclusive arguments
-        with tm.assertRaisesRegexp(TypeError, 'mutually exclusive'):
+        with tm.assert_raises_regex(TypeError, 'mutually exclusive'):
             self.frame.filter(items=['one', 'three'], regex='e$', like='bbi')
-        with tm.assertRaisesRegexp(TypeError, 'mutually exclusive'):
+        with tm.assert_raises_regex(TypeError, 'mutually exclusive'):
             self.frame.filter(items=['one', 'three'], regex='e$', axis=1)
-        with tm.assertRaisesRegexp(TypeError, 'mutually exclusive'):
+        with tm.assert_raises_regex(TypeError, 'mutually exclusive'):
             self.frame.filter(items=['one', 'three'], regex='e$')
-        with tm.assertRaisesRegexp(TypeError, 'mutually exclusive'):
+        with tm.assert_raises_regex(TypeError, 'mutually exclusive'):
             self.frame.filter(items=['one', 'three'], like='bbi', axis=0)
-        with tm.assertRaisesRegexp(TypeError, 'mutually exclusive'):
+        with tm.assert_raises_regex(TypeError, 'mutually exclusive'):
             self.frame.filter(items=['one', 'three'], like='bbi')
 
         # objects

pandas/tests/frame/test_block_internals.py

@@ -17,8 +17,7 @@
 
 from pandas.util.testing import (assert_almost_equal,
                                  assert_series_equal,
-                                 assert_frame_equal,
-                                 assertRaisesRegexp)
+                                 assert_frame_equal)
 
 import pandas.util.testing as tm
 
@@ -481,7 +480,7 @@ def test_convert_objects(self):
 
         # via astype, but errors
         converted = self.mixed_frame.copy()
-        with assertRaisesRegexp(ValueError, 'invalid literal'):
+        with tm.assert_raises_regex(ValueError, 'invalid literal'):
             converted['H'].astype('int32')
 
         # mixed in a single column

pandas/tests/frame/test_combine_concat.py

@@ -15,9 +15,7 @@
 from pandas.tests.frame.common import TestData
 
 import pandas.util.testing as tm
-from pandas.util.testing import (assertRaisesRegexp,
-                                 assert_frame_equal,
-                                 assert_series_equal)
+from pandas.util.testing import assert_frame_equal, assert_series_equal
 
 
 class TestDataFrameConcatCommon(tm.TestCase, TestData):
@@ -78,11 +76,13 @@ def test_append_series_dict(self):
                        columns=['foo', 'bar', 'baz', 'qux'])
 
         series = df.loc[4]
-        with assertRaisesRegexp(ValueError, 'Indexes have overlapping values'):
+        with tm.assert_raises_regex(ValueError,
+                                    'Indexes have overlapping values'):
             df.append(series, verify_integrity=True)
         series.name = None
-        with assertRaisesRegexp(TypeError, 'Can only append a Series if '
-                                'ignore_index=True'):
+        with tm.assert_raises_regex(TypeError,
+                                    'Can only append a Series if '
+                                    'ignore_index=True'):
             df.append(series, verify_integrity=True)
 
         result = df.append(series[::-1], ignore_index=True)
@@ -270,7 +270,7 @@ def test_update_raise(self):
 
         other = DataFrame([[2., nan],
                            [nan, 7]], index=[1, 3], columns=[1, 2])
-        with assertRaisesRegexp(ValueError, "Data overlaps"):
+        with tm.assert_raises_regex(ValueError, "Data overlaps"):
             df.update(other, raise_conflict=True)
 
     def test_update_from_non_df(self):
@@ -419,7 +419,7 @@ def test_concat_axis_parameter(self):
         assert_frame_equal(concatted_1_series, expected_columns_series)
 
         # Testing ValueError
-        with assertRaisesRegexp(ValueError, 'No axis named'):
+        with tm.assert_raises_regex(ValueError, 'No axis named'):
             pd.concat([series1, series2], axis='something')
 
     def test_concat_numerical_names(self):