small change on conftest.py

conftest.py

 import os
 import shutil
+import py
 
 import pytest
 
@@ -13,5 +14,6 @@ def teardown_module(pytestconfig):
     d = pytestconfig._assertstate.hook.session._initialparts
     for di in d:
         for dii in di:
-            if "data" in os.listdir(dii.dirname):
-                shutil.rmtree(os.path.join(dii.dirname, "data"), ignore_errors=True)
+            if isinstance(dii, py._path.local.LocalPath):
+                if "data" in os.listdir(dii.dirname):
+                    shutil.rmtree(os.path.join(dii.dirname, "data"), ignore_errors=True)