Cooldown Mapping | Discord.py

I am using on_message to scan the code for specific keywords so that the bot can respond accordingly, and no, I cannot use commands to achieve this. I want to prevent people from s

Solution 1:

class SomeCog(commands.Cog):
    def __init__(self, bot):
        self.bot = bot
        self._cd = commands.CooldownMapping.from_cooldown(1.0, 60.0, commands.BucketType.user) # Put your params here
                                                        # rate, per, BucketType

    def ratelimit_check(self, message):
        """Returns the ratelimit left"""
        bucket = self._cd.get_bucket(message)
        return bucket.update_rate_limit()


    @commands.Cog.listener()
    async def on_message(self, message):
        if 'check if the message contains certain words here':
            # Getting the ratelimit that's left
            retry_after = self.ratelimit_check(message)
            if retry_after is None:
                # You're not ratelimited
            else:
                # You're ratelimited, you can delete the message here
                await message.delete()
                await message.channel.send(f"You can't use those words for another {round(retry_after)} seconds.")

The code here evaluates if the message contains certain words, if it does, checks for ratelimit, if there is one - deletes the message and sends a message.