client send message to user discord.py code example

Example 1: send message discord.py

await message.channel.send("Your message")

Example 2: discord.py fetch channel

await client.fetch_channel(channelId)

Example 3: store message sent by user in string discord py

response = client.wait_for_message(author=ctx.message.author, timeout=30) 
myvar = response.content  

Make sure to Define ctx and message if you want it to be controlled by a command

Example 4: discord py fetch channel by id

channel = discord.utils.get(ctx.guild.channels, name=given_name)
channel_id = channel.id