第七期作业

# coding:utf-8
import concurrent.futures
import requests
import time
def download_one(url):
    response = requests.get(url)
    return response.status_code
def download_many(urls):
    with concurrent.futures.ThreadPoolExecutor(max_workers=10) as executor:
        executor.map(download_one, urls)
def main():
    start_time = time.perf_counter()
    url = "http://www.baidu.com"
    urls = map(lambda item: url, range(0, 100))
    download_many(urls)
    end_time = time.perf_counter()
    print("avg take {} ms".format((end_time - start_time) / 100 * 1000))
if __name__ == '__main__':
    main()