# import urllib.request
# from datetime import datetime
# import time
# import mmap
# import os
# print(os.getpid())
# print(os.getpgid(os.getpid()))



# with open("./data", "r+b") as f:
#     mm = mmap.mmap(f.fileno(), 0)
#     time.sleep(1000000)
# #     lis = []
# #     while True:
# #         lis.clear()
# #         for _ in range(1024 * 1024 * 400):
# #             if len(lis) < 1024 * 1024 * 50:
# #                 lis.append(_)
# #         print("Ok")

        





# import time
# from datetime import datetime
# import urllib.request

# while True:
#     time.sleep(1)
#     now = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
#     print(now)
#     try:
#         request = urllib.request.Request("http://www.baidu.com")
#         with urllib.request.urlopen(request) as response:
#             data = response.read()
#             content = data.decode("utf-8")
#             print(f"{len(content)}")
#     except Exception as e:
#         print(e)