fix ruff checks (mostly documentation and dead code)

flupdt/common.py

@@ -1,9 +1,11 @@
-"""common."""
+"""Common utilities."""
 
 import itertools
 import logging
 import sys
-from subprocess import Popen,PIPE
+from collections.abc import Iterable
+from subprocess import PIPE, Popen
+from types import FunctionType
 
 
 def configure_logger(level: str = "INFO") -> None:
@@ -20,7 +22,7 @@ def configure_logger(level: str = "INFO") -> None:
     )
 
 
-def partition(predicate, iterable):
+def partition(predicate: FunctionType, iterable: Iterable) -> tuple[Iterable, Iterable]:
     """Partition entries into false entries and true entries.
 
     If *predicate* is slow, consider wrapping it with functools.lru_cache().