data module passes all ruff checks

src/data/DataPool.py

@@ -2,15 +2,11 @@
 # provides data to experiment script and display
 
 import sys
-import types
 import tables
 import collections
 import threading
 import traceback
 import io
-from . import ADC_Result
-from . import Accumulation
-from . import MeasurementResult
 
 class DataPool(collections.abc.MutableMapping):
     """
@@ -103,8 +99,8 @@ class DataPool(collections.abc.MutableMapping):
             self.__dictlock.release()
 
     def __send_event(self, _event):
-        for l in self.__registered_listeners:
-            l(_event.copy())
+        for listeners in self.__registered_listeners:
+            listeners(_event.copy())
 
     def __del__(self):
         self.__send_event(DataPool.Event(DataPool.Event.destroy))
@@ -124,13 +120,14 @@ class DataPool(collections.abc.MutableMapping):
         self.__dictlock.release()
         try:
             for key in dict_keys:
-                if key[:2]=="__": continue
+                if key.startswith("__"):
+                    continue
                 dump_dir=dump_group
                 # walk along the given path and create groups if necessary
                 namelist = key.split("/")
                 for part in namelist[:-1]:
                     dir_part="dir_"+str(part).translate(DataPool.translation_table)
-                    if not dir_part in dump_dir:
+                    if dir_part not in dump_dir:
                         dump_dir=dump_file.create_group(dump_dir,name=dir_part,title=part)
                     else:
                         if dump_dir._v_children[dir_part]._v_title==part: