cleanups to the code

Author: Raisa Dzhamtyrova

pandas/tests/extension/json/test_json.py

@@ -136,7 +136,7 @@ def test_custom_asserts(self):
         self.assert_frame_equal(a.to_frame(), a.to_frame())
 
         b = pd.Series(data.take([0, 0, 1]))
-        msg = r"ExtensionArray are different.*"
+        msg = r"ExtensionArray are different"
         with pytest.raises(AssertionError, match=msg):
             self.assert_series_equal(a, b)
 

pandas/tests/extension/test_boolean.py

@@ -112,7 +112,7 @@ def _check_op(self, s, op, other, op_name, exc=NotImplementedError):
                 # subtraction for bools raises TypeError (but not yet in 1.13)
                 if _np_version_under1p14:
                     pytest.skip("__sub__ does not yet raise in numpy 1.13")
-                msg = r"numpy boolean subtract, the \`-\` operator.*"
+                msg = r"numpy boolean subtract, the \`-\` operator"
                 with pytest.raises(TypeError, match=msg):
                     op(s, other)
                 return

pandas/tests/frame/methods/test_isin.py

@@ -96,7 +96,7 @@ def test_isin_df_dupe_values(self):
         df1 = DataFrame({"A": [1, 2, 3, 4], "B": [2, np.nan, 4, 4]})
         # just cols duped
         df2 = DataFrame([[0, 2], [12, 4], [2, np.nan], [4, 5]], columns=["B", "B"])
-        msg = "cannot compute isin with a duplicate axis."
+        msg = r"cannot compute isin with a duplicate axis\."
         with pytest.raises(ValueError, match=msg):
             df1.isin(df2)
 

pandas/tests/frame/methods/test_replace.py

@@ -1310,7 +1310,7 @@ def test_categorical_replace_with_dict(self, replace_dict, final_data):
         tm.assert_frame_equal(result, expected)
         msg = (
             r"Attributes of DataFrame.iloc\[:, 0\] "
-            r"\(column name=\"a\"\) are different.*"
+            r"\(column name=\"a\"\) are different"
         )
         with pytest.raises(AssertionError, match=msg):
             # ensure non-inplace call does not affect original