提交一下，准备更换总线通信架构

toolbox/codes/common/clibs.py

@@ -1,5 +1,7 @@
 from pathlib import Path
 from threading import Lock
+import atexit
+
 
 base_path = Path(__file__).resolve().parent.parent.parent
 lock = Lock()
@@ -10,6 +12,10 @@ avatar = f"{base_path}/assets/media/avatar.jpg"
 proverb = "佛曰：Time will say~"
 bg = f"{base_path}/assets/media/bg.jpg"
 win_width, win_height = 1100, 500
+conn, cursor = None, None
+listW_items = ["实用工具", "效率提升", "财务分析"]
+
+
 def delete_files_in_directory(directory):
     path = Path(directory)
     if path.exists() and path.is_dir():