style: appease mypy

gumpy/variantfile.py

@@ -80,12 +80,12 @@ def __init__(
 
         # Get the filter attribute value
         assert len(record.filter.items()) >= 0, "A record has more than 1 filter set!"
-        self.filter: str | None
+        self.filter: list[str] | None
         if len(record.filter.items()) == 0:
             self.filter = None
             self.is_filter_pass = False
         else:
-            self.filter = list(record.filter.keys())
+            self.filter = [str(x) for x in record.filter.keys()]
             self.is_filter_pass = (
                 True
                 if len(self.filter) == 1 and record.filter.items()[0][0] == "PASS"
@@ -563,7 +563,7 @@ def __find_calls(self):
                 not record.is_filter_pass
             ):
                 # We only want to allow these through if the filter fail is MIN_FRS
-                if record.filter == "MIN_FRS":
+                if record.filter == ["MIN_FRS"]:
                     # Allow MIN_FRS
                     variant = record.ref
                     variant_type = "ref"