how to mention voice channel discord.py code example

Example 1: how to send a message in a specific channel discord.py

channel = client.get_channel(12324234183172)
await channel.send('hello')

Example 2: discord.py find voice channel by name

channel = discord.utils.find(lambda c: c.name == 'some name' and c.type == 'voice', some_list_of_channels)
if channel is not None:
    print(channel.id)