Update code to adjust to most recent python/fastapi.

etebase_server/fastapi/sendfile/utils.py

@@ -1,4 +1,5 @@
 import logging
+import os
 from functools import lru_cache
 from importlib import import_module
 from pathlib import Path, PurePath
@@ -32,9 +33,7 @@ def _convert_file_to_url(path):
     path_obj = PurePath(path)
 
     relpath = path_obj.relative_to(path_root)
-    # Python 3.5: Path.resolve() has no `strict` kwarg, so use pathmod from an
-    # already instantiated Path object
-    url = relpath._flavour.pathmod.normpath(str(url_root / relpath))
+    url = os.path.normpath(str(url_root / relpath))
 
     return quote(str(url))
 
@@ -48,9 +47,7 @@ def _sanitize_path(filepath):
     filepath_obj = Path(filepath)
 
     # get absolute path
-    # Python 3.5: Path.resolve() has no `strict` kwarg, so use pathmod from an
-    # already instantiated Path object
-    filepath_abs = Path(filepath_obj._flavour.pathmod.normpath(str(path_root / filepath_obj)))
+    filepath_abs = Path(os.path.normpath(str(path_root / filepath_obj)))
 
     # if filepath_abs is not relative to path_root, relative_to throws an error
     try: