tcp_echo_server.py

import asyncio

async def handle_echo(reader, writer):
    data = await reader.read(100)
    message = data.decode()
    addr = writer.get_extra_info('peername')
    print(("Received %r from %r" % (message, addr)))

    print(("Send: %r" % message))
    writer.write(data)
    await writer.drain()

    print("Close the client socket")
    writer.close()

loop = asyncio.get_event_loop()
coro = asyncio.start_server(handle_echo, '127.0.0.1', 8888, loop=loop)
server = loop.run_until_complete(coro)

# Serve requests until Control+C is pressed
print(("Serving on {}".format(server.sockets[0].getsockname())))

try:
    loop.run_forever()
except KeyboardInterrupt:
    pass

# close the server
server.close()
loop.run_until_complete(server.wait_closed())
loop.close()