Client-prob6

import socket
import struct

HOST = "192.168.43.4"
PORT = 19999

string = "hello there"
string = list(string)
char = "e"
positions = []

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
    sock.connect((HOST, PORT))
    sock.send(struct.pack("!I", len(string)))
    sock.send(struct.pack("!c", char.encode('ascii')))

    for i in range(len(string)):
        sock.send(struct.pack("!c", string[i].encode('ascii')))

    data = sock.recv(4)
    data = struct.unpack("!I", data)[0]
    print("number of positions: ", data)

    data = int(data)
    positions = []
    for i in range(data):
        data = sock.recv(4)
        data = struct.unpack("!I", data)[0]
        positions.append(data)
    print(positions)