now need to explicitly enable members intent

waggle-dance.py

@@ -109,7 +109,9 @@ async def countdown(channel):
 with open('config.json') as f:
     config = json.load(f)
 
-client = discord.Client()
+intents = discord.Intents.default()
+intents.members = True
+client = discord.Client(intents=intents)
 
 async def handle_guild_message(message):
     if not message.content.startswith('!waggle'):
@@ -181,33 +183,34 @@ async def handle_guild_message(message):
 
     await message.channel.send("{} Welcome to pollination! You'll be randomly paired up, moved into separate voice channels, spend some time chatting, and then move to a new channel and meet somebody else. Each round will last 5 minutes, and there'll be {} rounds total. I'll announce when your time is nearly up so you can wrap up your conversations, and I'll automatically move you to a different voice channel at the start of each new round. If you keep this text channel open, you'll get audible countdowns via text-to-speech at the end of each round. **Feel free to leave at any time if you need to. You won't get moved into new voice channels if you disconnect from voice.** If you find yourself alone in a channel, the person you were paired with for that round may have left; just relax and take a break for 5 minutes. Have fun!".format(mention_all, len(schedule)))
 
+    first_round = True
     for matching in schedule:
-        announcement = 'Next round starting in 30 seconds:\n'
-        announcement += '\n'.join('{0} and {1} in {2}'.format(a.mention, b.mention, c.name) for ((a, b), c) in zip(matching, pollination_channels))
-        await message.channel.send(announcement)
-        await countdown(message.channel)
+        await message.channel.send('Next round starting in 30 seconds:')
         for ((a, b), c) in zip(matching, pollination_channels):
-            try:
-                await a.move_to(c)
-            except discord.DiscordException as e:
-                print('failed to move participant {}: {}'.format(a, e), file=sys.stderr)
-            try:
-                await b.move_to(c)
-            except discord.DiscordException as e:
-                print('failed to move participant {}: {}'.format(b, e), file=sys.stderr)
+            await message.channel.send('{0} and {1} in {2}'.format(a.mention, b.mention, c.name))
+        await countdown(message.channel)
+        for (pair, c) in zip(matching, pollination_channels):
+            for u in pair:
+                if u.voice is not None and ((first_round and u.voice.channel == main_voice_channel) or u.voice.channel in pollination_channels):
+                    try:
+                        await u.move_to(c)
+                    except discord.DiscordException as e:
+                        print('failed to move participant {}: {}'.format(u, e), file=sys.stderr)
         await asyncio.sleep(60*3)
         await message.channel.send('Round ending in 2 minutes {}'.format(mention_all))
         await asyncio.sleep(60)
         await message.channel.send('Round ending in 1 minute {}'.format(mention_all))
         await asyncio.sleep(30)
+        first_round = False
 
     await message.channel.send('Returning to main channel in 30 seconds {}'.format(mention_all))
     await countdown(message.channel)
     for u in participants:
-        try:
-            await u.move_to(main_voice_channel)
-        except discord.DiscordException as e:
-            print('failed to move participant {}: {}'.format(u, e), file=sys.stderr)
+        if u.voice is not None and u.voice.channel in pollination_channels:
+            try:
+                await u.move_to(main_voice_channel)
+            except discord.DiscordException as e:
+                print('failed to move participant {}: {}'.format(u, e), file=sys.stderr)
 
     await delete_if_possible(pollination_channels)
 
@@ -220,22 +223,22 @@ async def handle_dm(message):
         discriminator = match.group(2)
         matching_users = [u for u in client.users if u.name == name and u.discriminator == discriminator]
         if len(matching_users) == 0:
-            await message.channel.send("sorry, I can't find user {}, it looks like they're not in any of the discords I'm in".format(handle))
+            await message.channel.send("sorry, I can't find user {}, it looks like they're not in any of the discords I'm in".format(handle), allowed_mentions=discord.AllowedMentions.none())
         else:
             target = matching_users[0].id
             if target in get_blocks().get(requester, []):
-                await message.channel.send("removing {} from your list of blocked users for pollination".format(handle))
+                await message.channel.send("removing {} from your list of blocked users for pollination".format(handle), allowed_mentions=discord.AllowedMentions.none())
                 remove_block(requester, target)
             else:
-                await message.channel.send("adding {} to your list of blocked users for pollination".format(handle))
+                await message.channel.send("adding {} to your list of blocked users for pollination".format(handle), allowed_mentions=discord.AllowedMentions.none())
                 add_block(requester, target)
 
     blocks = get_blocks().get(requester, [])
     if len(blocks) == 0:
         await message.channel.send("you currently don't have anyone blocked for pollination")
     else:
-        await message.channel.send("your current list of blocked users for pollination is:\n{}".format('\n'.join('@{}#{}'.format(u.name, u.discriminator) for u in [client.get_user(uid) for uid in blocks] if u is not None)))
-    await message.channel.send("to block or unblock a user, DM me their handle, like @creep#0000. to see this message and your list of blocked users, DM me something random. buzz buzz!")
+        await message.channel.send("your current list of blocked users for pollination is:\n{}".format('\n'.join('@{}#{}'.format(u.name, u.discriminator) for u in [client.get_user(uid) for uid in blocks] if u is not None)), allowed_mentions=discord.AllowedMentions.none())
+    await message.channel.send("to block or unblock a user, DM me their handle, like @creep#0000. to see this message and your list of blocked users, DM me something random. buzz buzz!", allowed_mentions=discord.AllowedMentions.none())
 
 @client.event
 async def on_ready():