1. from socket import socket, AF_INET, SOCK_STREAM
    4. class LazyConnection:
    5.     def __init__(self, address, family=AF_INET, type=SOCK_STREAM):
    6.         self.address = address
    7.         self.family = family
    8.         self.type = type
    9.         self.connections = []
    11.     def __enter__(self):
    12.         sock = socket(self.family, self.type)
    13.         sock.connect(self.address)
    14.         self.connections.append(sock)
    15.         return sock
    17.     def __exit__(self, exc_type, exc_val, exc_tb):
    18.         self.connections.pop().close()
    20. if __name__ == '__main__':
    21.     from functools import partial
    23.     conn = LazyConnection(('www.python.org', 80))
    25.     with conn as s1:
    26.         pass
    28.         with conn as s2:
    29.             s1.send(b'GET /index.html HTTP/1.0\r\n')
    30.             s1.send(b'Host: www.python.org\r\n')
    31.             s1.send(b'\r\n')
    32.             resp = b''.join(iter(partial(s1.recv, 8192), b''))
    33.             print(resp.decode())