import socket

HOST = "localhost"
PORT = 9999

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((HOST, PORT))
sock.send("Hello World")
data = sock.recv(1024)
sock.close()
print ("Received", repr(data))

---------
ERROR
--------

Traceback (most recent call last):
  File "C:\Users\ninja\Desktop\client.py", line 8, in <module>
    sock.send("Hello World")
TypeError: 'str' does not support the buffer interface