discord.py get message text
#This is the same as Santinos answer, but not in plaintext ;-;
#When getting a message, you're going to need an abc.Messageable object - essentially an object where you can send a message in, for example a text channel, a DM etc.
#Example:
@bot.command()
async def getmsg(ctx, msgID: int): # yes, you can do msg: discord.Message
# but for the purposes of this, i'm using an int
msg = await ctx.fetch_message(msgID) # you now have the message object from the id
# ctx.fetch_message gets it from the channel
# the command was executed in
###################################################
@bot.command()
async def getmsg(ctx, channel: discord.TextChannel, member: discord.Member):
msg = discord.utils.get(await channel.history(limit=100).flatten(), author=member)
# this gets the most recent message from a specified member in the past 100 messages
# in a certain text channel - just an idea of how to use its versatility