get status and open lock

Kerong.py

import socket
import sys
import codecs


class Kerong:
    def __init__(self, ip, port):
        self.ip = ip
        self.port = port
        # Create a TCP/IP socket
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.sock.settimeout(10)
        server_address = (self.ip, self.port)
        print(sys.stderr, 'connecting to %s port %s' % server_address)
        # Connect the socket to the port where the server is listening
        self.sock.connect(server_address)
        
    # this command is used to open the locker, it does not return data
    # -----------------------------------------------------------------
    def lock_open(self, locker):

        try:
            self.sock.setblocking(True)
            # Send data
            m = bytes.fromhex(locker)
            print(sys.stderr, 'sending "%s"' % m)
            self.sock.send(m)
        finally:
            print(sys.stderr, 'closing socket')
            self.sock.close()
            
    # this command is used to get locker status based on specific locker address
    # it returns binary data
    # -----------------------------------------------------------------
    def lock_stat(self, locker):
        try:
            # self.sock.setblocking(True)
            # Send data
            m = bytes.fromhex(locker)
            print(sys.stderr, 'sending "%s"' % m)
            self.sock.send(m)

            r = self.sock.recv(1024)
            # print(len(r))
            s = str(r)
            print(s)
        finally:
            print(sys.stderr, 'closing socket')
            self.sock.close()
    
    # this command is used to get all locker status, it will return data
    # -----------------------------------------------------------------
    def stat_lock_all(self):
        try:
            m = bytes.fromhex('02 F0 32 03 27')
            print(sys.stderr, 'sending "%s"' % m)
            self.sock.send(m)
            r = self.sock.recv(1024)
            # print(len(r))
            # s = str(r)
            print('data nya #############')
            print(r.decode(encoding='utf-8', errors='strict'))
        finally:
            print('close socket')
            self.sock.close()


tes = Kerong('192.168.123.49', 5000)

# open lock
# tes.lock_open('02 00 31 03 36')

# show all status lock
tes.stat_lock_all()

# this response
# <_io.TextIOWrapper name='<stderr>' mode='w' encoding='utf-8'> connecting to 192.168.123.49 port 5000
# <_io.TextIOWrapper name='<stderr>' mode='w' encoding='utf-8'> sending "b"\x02\xf02\x03'""
# data nya #############
# �6����;
# close socket