UIの多言語化（日本語と英語）に対応、Configで言語を変更できるように。それに伴いUIを再生成しているため、その部分を関数化して切り出しました。

utils.py

@@ -1,4 +1,6 @@
 from json import load, dump
+from os import path as os_path
+import yaml
 from datetime import datetime
 from threading import Thread, Event
 
@@ -38,4 +40,91 @@ class thread_fnc(Thread):
         while True:
             if self.stopped():
                 return
-            self.fnc(*self._args, **self._kwargs)
+            self.fnc(*self._args, **self._kwargs)
+
+def get_localized_text(language):
+    file_path = os_path.join(os_path.dirname(__file__), "locales.yml")
+
+    with open(file_path, encoding="utf-8") as file:
+        languages_yaml_data = yaml.safe_load(file)
+    default_language = "en"
+    if language in languages_yaml_data:
+        localized_text = languages_yaml_data[language]
+        if default_language in languages_yaml_data:
+            default_text = languages_yaml_data[default_language]
+            merged_text = {**default_text, **localized_text}
+            return merged_text
+        else:
+            return localized_text
+    else:
+        return None
+    
+def get_key_by_value(dictionary, value):
+    for key, val in dictionary.items():
+        if val == value:
+            return key
+    return None
+
+def widget_config_window_label_setter(self, language_yaml_data):
+    widget_names = [
+        # tab UI
+        "label_transparency",
+        "label_appearance_theme",
+        "label_ui_scaling",
+        "label_font_family",
+        "label_ui_language",
+
+        # tab Translation
+        "label_translation_translator",
+        "label_translation_input_language",
+        "label_translation_output_language",
+
+        # tab Transcription
+        "label_input_mic_host",
+        "label_input_mic_device",
+        "label_input_mic_voice_language",
+        "label_input_mic_energy_threshold",
+        "checkbox_input_mic_threshold_check",
+        "label_input_mic_dynamic_energy_threshold",
+        "label_input_mic_record_timeout",
+        "label_input_mic_phrase_timeout",
+        "label_input_mic_max_phrases",
+        "label_input_mic_word_filter",
+
+        "label_input_speaker_device",
+        "label_input_speaker_voice_language",
+        "label_input_speaker_energy_threshold",
+        "checkbox_input_speaker_threshold_check",
+        "label_input_speaker_dynamic_energy_threshold",
+        "label_input_speaker_record_timeout",
+        "label_input_speaker_phrase_timeout",
+        "label_input_speaker_max_phrases",
+
+        
+        # tab Parameter
+        "label_ip_address",
+        "label_port",
+        "label_authkey",
+        "label_message_format",
+    
+        # tab Others
+        "label_checkbox_auto_clear_chatbox"
+    ]
+    for name in widget_names:
+        widget = getattr(self, name)
+        text_value = language_yaml_data.get(name)
+        if widget is not None and text_value is not None:
+            widget.configure(text=text_value + ":")
+
+def widget_main_window_label_setter(self, language_yaml_data):
+    widget_names = [
+        "checkbox_translation",
+        "checkbox_transcription_send",
+        "checkbox_transcription_receive",
+        "checkbox_foreground",
+    ]
+    for name in widget_names:
+        widget = getattr(self, name)
+        text_value = language_yaml_data.get(name)
+        if widget is not None and text_value is not None:
+            widget.configure(text=text_value)