BUG: Use correct location for rdataset

Use carData instead of car

Author: bashtage

statsmodels/datasets/tests/test_utils.py

@@ -14,7 +14,7 @@ def test_get_rdataset():
     internet_available = check_internet(test_url)
     if not internet_available:
         pytest.skip('Unable to retrieve file - skipping test')
-    duncan = get_rdataset("Duncan", "car", cache=cur_dir)
+    duncan = get_rdataset("Duncan", "carData", cache=cur_dir)
     assert_(isinstance(duncan, utils.Dataset))
     duncan = get_rdataset("Duncan", "carData", cache=cur_dir)
     assert_(duncan.from_cache)

statsmodels/iolib/tests/test_foreign.py

@@ -1,6 +1,8 @@
 """
 Tests for iolib/foreign.py
 """
+from statsmodels.compat import PY3
+
 import os
 import warnings
 from datetime import datetime
@@ -9,7 +11,6 @@
 import numpy as np
 from pandas import DataFrame, isnull
 import pandas.util.testing as ptesting
-import pytest
 
 from statsmodels.compat.python import BytesIO, asbytes
 import statsmodels.api as sm
@@ -18,8 +19,6 @@
 from statsmodels.datasets import macrodata
 
 
-from statsmodels.compat.pandas import version as pandas_version
-
 # Test precisions
 DECIMAL_4 = 4
 DECIMAL_3 = 3