update

sort_known_hosts.py

@@ -11,18 +11,18 @@ from collections import namedtuple
 class Entry(namedtuple('Entry', ['host', 'algorithm', 'hash'])):
     separator: str = '.'
 
-    def __str__(self):
+    def __str__(self) -> str:
         return f'{self.host} {self.algorithm} {self.hash}'
 
     @property
-    def key(self):
+    def key(self) -> str:
         return f'{self.algorithm}{self.separator}{self.hash}'
 
 
 def main(args):
-    filename: Path | None = getattr(args, 'known_hosts', None)
+    filename: Path = getattr(args, 'known_hosts', Path())
     file_path = filename.resolve()
-    if not file_path.exists() or not file_path.is_file():
+    if not file_path.is_file():
         sys.exit(1)
     entryMap = {}