TST: couple small test fixes

Author: wesm

pandas/core/generic.py

@@ -36,7 +36,7 @@ def load(cls, path):
     def _get_axis_number(cls, axis):
         axis = cls._AXIS_ALIASES.get(axis, axis)
 
-        if isinstance(axis, int):
+        if com.is_integer(axis):
             if axis in cls._AXIS_NAMES:
                 return axis
             else:

pandas/io/tests/test_pytables.py

@@ -37,7 +37,10 @@ def setUp(self):
 
     def tearDown(self):
         self.store.close()
-        os.remove(self.path)
+        try:
+            os.remove(self.path)
+        except os.error:
+            pass
 
     def test_factory_fun(self):
         try: