Client = discord.client() TypeError: 'module' object is not callable

Why I am I getting TypeError: 'module' object is not callable with my code?

import discord
from discord.ext.commands import Bot
from discord.ext import commands
import asyncio
import time
Client = discord.Client() 
client = commands.Bot(command_prefix = "?") 
@client.event
async def on_ready():
    print("Bot is online and connected to Discord")
@client.event
async def on_message(message):
 if message.content == "cookie":
 await client.send_message(message.channel, ":cookie:")
client.run("...") 

完全错误:

错误:Client = discord.client() TypeError:模块"对象不可调用

Client = discord.Client()