made it possible to en-/decode enum values to/from json

HSMensaW_botA.py

@@ -58,6 +58,13 @@ datum = None
 botID = -1
 
 
+class EnumEncode(json.JSONEncoder):
+    def default(self, obj):
+        if type(obj) is Language:
+            return {"Language": str(obj.name)}
+        return json.JSONEncoder.default(self, obj)
+
+
 class HSMensaW(telepot.aio.helper.ChatHandler):
     keyboard = InlineKeyboardMarkup(inline_keyboard=[
         [InlineKeyboardButton(text="Deutsch", callback_data=Language.GERMAN.value)],
@@ -228,7 +235,7 @@ async def send_message(bot_obj: DelegatorBot, chat_id: int, msg: str, parse_mode
 
 def write_config() -> None:
     with open(config_filename, 'w') as outfile:
-        json.dump(config, outfile)
+        json.dump(config, outfile, cls=EnumEncode)
 
 
 async def get_essen(only_today: bool) -> None:
@@ -360,6 +367,14 @@ def get_now() -> str:
     return datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
 
 
+def as_enum(d):
+    if "Language" in d:
+        lang = d["Language"]
+        return getattr(Language, lang)
+    else:
+        return d
+
+
 sys.stdout = open("out.log", "a")
 sys.stderr = open("err.log", "a")
 message_log = open("msg.log", "a")
@@ -372,7 +387,7 @@ translator = Translator()
 
 try:
     with open(config_filename, 'r') as config_file:
-        config = json.load(config_file)
+        config = json.load(config_file, object_hook=as_enum)
 except FileNotFoundError as e:
     print('Error: config file "{}" not found: {}'.format(config_filename, e))
     sys.exit(-1)