test_socket.py 文件源码

def try_address(host, port=0, family=socket.AF_INET):
    """Try to bind a socket on the given host:port and return True
    if that has been possible."""
    try:
        sock = socket.socket(family, socket.SOCK_STREAM)
        sock.bind((host, port))
    except (socket.error, socket.gaierror):
        return False
    else:
        sock.close()
        return True