how to get a user avatar in discordpy code example

Example 1: discord.py get client avatar

clientProfilePicture = client.user.avatar_url

Example 2: How to get a user's avatar with their id in discord.py?

@commands.command()
async def avatar(self, ctx, *,  avamember : discord.Member=None):
    userAvatarUrl = avamember.avatar_url
    await ctx.send(userAvatarUrl)