使用aiphttp异步操作发送网络请求时出现错误

问题遇到的现象和发生背景

使用aiphttp异步操作发送网络请求时出现错误

问题相关代码，请勿粘贴截图

import asyncio
import time
start=time.time()
urls = [
        ' http://127.0.0.1:5000/jqr',
        ' http://127.0.0.1:5000/lsy',
        ' http://127.0.0.1:5000/lsx']
import aiohttp
async  def get_page(url):
    async with aiohttp.ClientSession() as session:
        async with await session.get(url) as response:
            page_text=await response.text()
            print(page_text)
tasks=[]
for url in urls:
    c=get_page(url)
    task=asyncio.ensure_future(c)
    tasks.append(task)
loop=asyncio.get_event_loop()
loop.run_until_complete(asyncio.wait(tasks))
end=time.time()
print(end-start)

这是我搭建的flask

from flask import Flask
import time
app=Flask(__name__)
@app.route("/jqr")
def index_jqr():
    time.sleep(2)
    return 'hello jqr'
@app.route("/lsy")
def index_lsy():
    time.sleep(2)
    return 'hello lsy'
@app.route("/lsx")
def index_lsx():
    time.sleep(2)
    return 'hello lsx'
if __name__ == '__main__':
    app.run(threaded=True)

运行结果及报错内容

我的解答思路和尝试过的方法

我想要达到的结果

你的url有问题，http前面有空格