increase compatibility with windows 11.

mdrsclient/cache.py

@@ -1,5 +1,4 @@
 import dataclasses
-import fcntl
 import hashlib
 import json
 import os
@@ -11,6 +10,7 @@ from pydantic.tools import parse_obj_as
 from mdrsclient.exceptions import UnexpectedException
 from mdrsclient.models import Laboratories, Token, User
 from mdrsclient.settings import CONFIG_DIRNAME
+from mdrsclient.utils import FileLock
 
 
 @dataclass
@@ -125,9 +125,10 @@ class CacheFile:
     def __save(self) -> None:
         self.__ensure_cache_dir()
         with open(self.__cache_file, "w") as f:
-            fcntl.flock(f, fcntl.LOCK_EX)
+            FileLock.lock(f)
             self.__data.update_digest()
             f.write(json.dumps(dataclasses.asdict(self.__data)))
+            FileLock.unlock(f)
         stat = os.stat(self.__cache_file)
         self.__serial = hash((stat.st_uid, stat.st_gid, stat.st_mode, stat.st_size, stat.st_mtime))
         # ensure file is secure.