How to list all of my bot guild names near the ids discord.py

How to list all of the guild ids and names instead of one?

@client.command()
async def guilds(ctx):
for guild in client.guilds:
    em=discord.Embed(title="GUILD IDS",description=f"{[guild.name + ' : '+ str(guild.id)]}")
  await ctx.send(embed=em)

>Solution :

You can use something like this:

@client.command()
async def commandname(ctx):
    listGuild = []
    for guild in client.guilds:
        listGuild.extend([guild.id, guild.name])
print(listGuild)