Fix tests

Author: jackbdoughty

src/genie_python/block_names.py

@@ -100,7 +100,7 @@ def _update_block_names(self, value: "PVValue", _: Optional[str], _1: Optional[s
 
         # add new block as attributes to class
         try:
-            assert isinstance(value, str | bytes)
+            assert isinstance(value, (str, bytes)), value
             block_names = dehex_decompress_and_dejson(value)
             for name in block_names:
                 attribute_name = name

src/genie_python/genie_epics_api.py

@@ -892,7 +892,7 @@ def get_pv_alarm(self, pv_name: str) -> str:
             alarm_val = self.get_pv_value(
                 "{}.SEVR".format(remove_field_from_pv(pv_name)), to_string=True
             )
-            assert alarm_val is str
+            assert isinstance(alarm_val, str)
             return alarm_val
 
         except Exception: