Address @gfyoung reviews

pandas-dev#17206 (review)
pandas-dev#17206 (review)
pandas-dev#17206 (comment)

Author: dhimmel

doc/source/whatsnew/v0.21.0.txt

@@ -126,7 +126,7 @@ Other Enhancements
 - :func:`date_range` now accepts 'Y' in addition to 'A' as an alias for end of year (:issue:`9313`)
 - Integration with `Apache Parquet <https://parquet.apache.org/>`__, including a new top-level :func:`read_parquet` and :func:`DataFrame.to_parquet` method, see :ref:`here <io.parquet>`.
 - :func:`DataFrame.add_prefix` and :func:`DataFrame.add_suffix` now accept strings containing the '%' character. (:issue:`17151`)
-- :func:`read_csv` can now infer compression from non-string paths, such as a ``pathlab.Path`` objects (:issue:`17206`).
+- :func:`read_csv` can now infer compression from non-string paths, such as a ``pathlib.Path`` objects (:issue:`17206`).
 
 .. _whatsnew_0210.api_breaking:
 

pandas/tests/io/parser/compression.py

@@ -166,20 +166,17 @@ def test_read_csv_infer_compression(self):
 
         inputs[3].close()
 
-    def test_read_csv_infer_compression_pathlib(self):
+    @pytest.mark.parametrize('extension', ['', '.gz', '.bz2'])
+    def test_read_csv_infer_compression_pathlib(self, extension):
         """
         Test that compression is inferred from pathlib.Path paths.
         """
-        try:
-            import pathlib
-        except ImportError:
-            pytest.skip('need pathlib to run')
-        expected = self.read_csv(self.csv1, index_col=0, parse_dates=True)
-        for extension in '', '.gz', '.bz2':
-            path = pathlib.Path(self.csv1 + extension)
-            df = self.read_csv(
-                path, index_col=0, parse_dates=True, compression='infer')
-            tm.assert_frame_equal(expected, df)
+        pathlib = pytest.importskip('pathlib')
+        read_csv_kwargs = {'index_col': 0, 'parse_dates': True}
+        expected = self.read_csv(self.csv1, **read_csv_kwargs)
+        path = pathlib.Path(self.csv1 + extension)
+        df = self.read_csv(path, compression='infer', **read_csv_kwargs)
+        tm.assert_frame_equal(expected, df)
 
     def test_invalid_compression(self):
         msg = 'Unrecognized compression type: sfark'