style: fix ruff formatting in util.py and test_base.py

Signed-off-by: suhr25 <suhridmarwah07@gmail.com>

Author: suhr25

malariagen_data/util.py

@@ -855,9 +855,7 @@ def _value_error(
     value,
     expectation,
 ):
-    message = (
-        f"Bad value for parameter {name}; expected {expectation}, " f"found {value!r}"
-    )
+    message = f"Bad value for parameter {name}; expected {expectation}, found {value!r}"
     raise ValueError(message)
 
 
@@ -899,6 +897,12 @@ def __init__(
             handler = logging.FileHandler(out)
         self._handler = handler
 
+        # Remove any pre-existing handlers from the singleton logger to prevent
+        # accumulation (and FileHandler FD leaks) on repeated instantiation.
+        for existing_handler in logger.handlers[:]:
+            logger.removeHandler(existing_handler)
+            existing_handler.close()
+
         # configure handler
         if handler is not None:
             if debug:

tests/anoph/test_base.py

@@ -298,9 +298,9 @@ def test_logging_helper_set_level_updates_logger():
     helper.set_level(logging.DEBUG)
     helper.debug("should appear")
     output = out.getvalue()
-    assert "should appear" in output, (
-        "set_level(DEBUG) had no effect: debug message was silently dropped"
-    )
+    assert (
+        "should appear" in output
+    ), "set_level(DEBUG) had no effect: debug message was silently dropped"
 
 
 def _strip_terms_of_use_from_manifest(manifest_path):