weird movement socket based programming

Question

I am coding a program that would allow multiple users to connect to a server at once and allow both of them to see both of their players. so far I have written some code that allows the players to see each other but their are some issues. For some reason my players are blitted twice in two positions where they both have the same x values but one has the right y value and the other has 10x times the y value. secondly, because of this issue my players are being blitted in one position or the other every tick and so are constantly flickering into and out of view. can anyone help with this issue.

import socket
import threading
import pygame

class Server():
    def __init__(self, port):
        self.host = (socket.gethostbyname(socket.gethostname()), port)
        self.server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.server.bind(self.host)
        self.players = []
        self.positions = []

    def start(self, server):
        self.server.listen()
        while True:
            self.conn, self.addr = self.server.accept()
            self.players.append((self.conn, self.addr))
            self.positions.append((0, 0))
            self.thread = threading.Thread(target = server.handleConn, args = (self.conn, server))
            self.thread.start()
    
    def handleConn(self, conn, server):
        self.msg = str(len(self.players) - 1).encode("utf-8")
        conn.send(self.msg)
        self.connection = True
        while self.connection:
            self.msg = conn.recv(512).decode("utf-8")
            self.msg = self.msg.split(",", -1)
            if len(self.msg) >= 2:
                if self.msg[1] == "disconnect":
                    self.connection = False
                    for i in range(1, len(self.players) - 1):
                        self.msg = str(i).encode("utf-8")
                        self.players[i][0].send(self.msg)
                    self.players = []
                    self.positions = []
                else:
                    self.new_msg = []
                    self.plc = ""
                    for item in self.msg:
                        self.plc = ""
                        for char in item:
                            if char.isdigit() or char == "-":
                                self.plc += str(char)
                        self.new_msg.append(int(self.plc))
                    self.msg = self.new_msg
                    self.positions[int(self.msg[0])] = (int(self.msg[1]), int(self.msg[2]))
                    server.sendMsg((self.msg[0], self.positions[self.msg[0]]))


    def sendMsg(self, msg):
        self.msg = str(msg).encode("utf-8")
        for i in range(0, len(self.players)):
            self.players[i][0].send(self.msg)

class Client():
    def __init__(self, port):
        pygame.init()
        self.host = (socket.gethostbyname(socket.gethostname()), port)
        self.client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.x = 0
        self.y = 0
        self.run = True
        self.win = pygame.display.set_mode((700, 700))
        self.positions = []
        self.colours = [(255,0,0), (0,255,0), (0,0,255)]

    def start(self, client):
        self.client.connect(self.host)
        self.msg = self.client.recv(512).decode("utf-8")
        self.msg = self.msg.split(",", -1)
        self.id = self.msg[0]
        self.connected = True
        while self.connected:
            if self.run:
                pygame.time.delay(5)
                client.sendMsg((self.id, self.x, self.y))
                client.recvMsg()
                client.drawWin()
                client.update()
            else:
                client.sendMsg("disconnect")
                self.connected = False

    def sendMsg(self, msg):
        self.msg = str(msg).encode("utf-8")
        self.client.send(self.msg)

    def recvMsg(self):
        self.msg = self.client.recv(512).decode("utf-8")
        self.msg = self.msg.split(",", -1)
        self.new_msg = []
        self.plc = ""
        for item in self.msg:
            self.plc = ""
            for char in item:
                if char.isdigit() or char == "-":
                    self.plc += str(char)
            self.new_msg.append(int(self.plc))
        self.msg = self.new_msg
        if len(self.msg) >= 2:
            if self.msg[0] >= len(self.positions):
                self.positions.append("")
            self.positions[int(self.msg[0])] = (int(self.msg[1]), int(self.msg[2]))
        else:
            self.id = self.msg[0]
            self.positions = []

    def drawWin(self):
        self.win.fill((0,0,0))
        for i in range(0, len(self.positions)):
            pygame.draw.rect(self.win, self.colours[int(self.id)], (self.positions[i][0], self.positions[i][1], 32, 32))
            print(i, self.positions[i])
        pygame.display.update()

    def update(self):
        keys = pygame.key.get_pressed()
        if keys[pygame.K_ESCAPE]:
            self.run = False
        if keys[pygame.K_w]:
            self.y -= 1
        if keys[pygame.K_a]:
            self.x -= 1
        if keys[pygame.K_s]:
            self.y += 1
        if keys[pygame.K_d]:
            self.x += 1
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                self.run = False
                choice.sendMsg("disconnect")
        if self.run == False:
            pygame.quit()

classes = [Server, Client]
port = int(input("4 digit port - "))
choice = classes[int(input("SERVER or CLIENT, 0 to 1 - "))](port)
choice.start(choice)