Converted most imports to lazy imports

ctabus/__init__.py

@@ -16,12 +16,27 @@ import sys
 import time
 import urllib
 
-from ctabus import fetch
+import lazy_import
+
+
 from ctabus.internal.config import log_dir, recent_list
-from ctabus.internal.disk_cache import disk_cache, make_key
-from ctabus.internal.notification import NotificationManager, HAS_NOTIFICATION
-from ctabus.internal.print2d import create_table, render_table
-from ctabus.internal.search import Search, StopSearch
+from ctabus.internal.notification import HAS_NOTIFICATION
+
+fetch = lazy_import.lazy_module("ctabus.fetch")
+
+disk_cache = lazy_import.lazy_class("ctabus.internal.disk_cache.disk_cache")
+make_key = lazy_import.lazy_function("ctabus.internal.disk_cache.make_key")
+
+
+NotificationManager = lazy_import.lazy_class(
+    "ctabus.internal.notification.NotificationManager"
+)
+
+create_table = lazy_import.lazy_function("ctabus.internal.print2d.create_table")
+render_table = lazy_import.lazy_function("ctabus.internal.print2d.render_table")
+
+Search = lazy_import.lazy_class("ctabus.internal.search.Search")
+StopSearch = lazy_import.lazy_class("ctabus.internal.search.StopSearch")
 
 HAS_TOAST = shutil.which("termux-toast") is not None
 CHICAGO_TZ = tz.gettz("America/Chicago")