reworked update_reaction and emoji calculation. Should work with unicode emojis now

data.py

@@ -82,27 +82,28 @@ class MsgData:
             LOGGER.info(f'Added message id {message.id} from {message.author}: {message.content}')
 
     async def update_reaction(self, msg: discord.Message):
-        async with self.lock:
-            # Drop all the reactions for this message id, if there are any
-            try:
+        # Drop all the reactions for this message id, if there are any
+        try:
+            async with self.lock:
                 self.reactions.drop(msg.id, level=0, axis=0, inplace=True)
-            except KeyError as e:
-                pass
+        except KeyError as e:
+            pass
 
-            # If there are reactions on the message after the change
-            if len(msg.reactions) > 0:
-                new = reaction_df(msg)
+        # If there are reactions on the message after the change
+        if len(msg.reactions) > 0:
+            new = reaction_df(msg)
+            async with self.lock:
                 self.reactions = pd.concat([self.reactions, new])
-                LOGGER.info(str(new.droplevel(level=0, axis=0).loc[:, 'count']))
+            LOGGER.info(str(new.droplevel(level=0, axis=0).loc[:, 'count']))
 
-                if msg.id not in self.msgs.index:
-                    await self.add_msg(msg)
+            if msg.id not in self.msgs.index:
+                await self.add_msg(msg)
 
-                return new
+            return new
 
     def emoji_messages(self, emoji_name: str, days: int = None) -> pd.DataFrame:
         """Creates a DataFrame of the messages that have reactions with a certain emoji. Includes a 'count' column"""
-        counts: pd.DataFrame = self.emoji_counts(emoji_name)
+        counts: pd.Series = self.emoji_counts(emoji_name)
 
         # Get the ids of messages that that have the targeted emoji
         message_id_counts: pd.Index = counts.index.drop_duplicates()
@@ -117,10 +118,11 @@ class MsgData:
 
             res['count'] = counts
 
-            if days is not None:
+            if days is not None and days > 0:
                 res = res[res['created'] >= (datetime.today() - timedelta(days=days)).astimezone()]
 
             return res.sort_values('created', ascending=False)
+
         else:
             raise KeyError(f'No messages found with {emoji_name} reactions')