discord.py on_message_reaction example
Example 1: discord.py add reaction to message
#1
message = ctx.send("text")
#2
message = channel.send("text")
#3
message = channel.fetch_message(messageid)
#add reaction to message
emoji = '\N{THUMBS UP SIGN}'
await message.add_reaction(emoji)
Example 2: add reaction discord.py
await message.add_reaction(emoji)