Discord bot who can pin messages with just adding reaction 📌 (:pushpin:)

pin-bot.py

import discord


client = discord.Client()


@client.event
async def on_ready():
    print('Logged in as')
    print(client.user.name)
    print(client.user.id)
    print('------')


@client.event
async def on_server_join(server):
    return await client.send_message(
        server.default_channel,
        """ Just add reaction of 📌, and the message pinned! """
    )


@client.event
async def on_reaction_add(reaction, user):
#    print(reaction.emoji)
#    print("reaction added")
    try:
        if str(reaction.emoji) == "📌":
            await reaction.message.pin()
    except:
        print("Failed to add emoji")

@client.event
async def on_reaction_remove(reaction, user):
    if reaction.emoji == "📌":
        try:
            if not ":pushpin:" in [ reaction.emoji.name for reaction in  reaction.message.reactions]:
                await reaction.message.unpin()
        except:
            print("Failed to remove emoji")

if __name__ == '__main__':
    client.run('BOTTOKEN')