Add support for pathlib.Path instances

openslide/__init__.py

@@ -150,7 +150,7 @@ def __init__(self, filename):
         """Open a whole-slide image."""
         AbstractSlide.__init__(self)
         self._filename = filename
-        self._osr = lowlevel.open(filename)
+        self._osr = lowlevel.open(str(filename))
 
     def __repr__(self):
         return '%s(%r)' % (self.__class__.__name__, self._filename)
@@ -160,7 +160,7 @@ def detect_format(cls, filename):
         """Return a string describing the format vendor of the specified file.
 
         If the file format is not recognized, return None."""
-        return lowlevel.detect_vendor(filename)
+        return lowlevel.detect_vendor(str(filename))
 
     def close(self):
         """Close the OpenSlide object."""

tests/__init__.py

@@ -19,6 +19,8 @@
 
 from functools import wraps
 import os
+from pathlib import Path
+
 from PIL import Image
 import unittest
 
@@ -52,4 +54,4 @@
 
 
 def file_path(name):
-    return os.path.join(os.path.dirname(__file__), name)
+    return Path(__file__).parent / name