How do I make a Discord bot respond to a message with a custom emoji in on_message

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How am I able to make my bot respond when a cutstom server emoji is in the string?
My code currently looks like this:

if message.content.startswith(":emoji: Hello"):
      await client.get_channel(123456789).send("Hello to you, too!")

If I post the emoji and the sentence in Discord, the command won't trigger. What do I need to change?

python-requests discord.py discord bots python
1 Answers

When using a custom emoji, it has a unique ID, and this is what appears in the message's content, not just the name of the emoji. You can access this in a couple of different ways, but the easiest might be \:emoji:, which you can see working here:

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And the final part is what the message's content is going to contain. So in my case, the correct statement would look like:

if message.content.lower().startswith("<:statue:709925980029845565> hello"):
    await message.channel.send("Hello to you too!") # sends to the same channel the message came from

You can also retrieve the emoji without using its ID:

emoji = discord.utils.get(message.guild.emojis, name="statue")
if message.content.lower().startswith(f"{emoji} hello"):
    await message.channel.send("Hello to you too!")

Note that I also used .lower() which makes the command case-insensitive, so it'll work whether the user types HelLo, HELLO or hElLo

References:

user_78082230
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