[Python] Handling multiple connections in python with sockets

I have a code which works perfectly for one connection. I have seen two options for multi-client handling but I don't really understand it. Here is the server socket code:

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as listening_sock:
listening_sock.bind(('', port))
listening_sock.listen()
client_soc, client_address = listening_sock.accept()
client_soc.sendall('200#Welcome to my server!'.encode())
print(f'Address {client_soc.getsockname()[0]} connected with port {client_soc.getsockname()[1]}')
while True:
# get message
msg = client_soc.recv(1024).decode()
# receive log print:
print(f'"{msg}" sent from {client_soc.getsockname()[0]}')
if 'Quit' in msg:
client_soc.sendall('200#Thanks for using my server!'.encode())
client_soc.close()
elif '0' < msg.split('#')[0] <= '9': # one of the valid actions
answer = call_action(msg.split('#')[0], db, msg.split('#')[1]) # the answer for given parameter
client_soc.sendall("200#".encode() + answer.encode())


If I have only one connection it works good and last thing I need to add is option for multiple-client handling. What is the shortest and easiest way to do it?

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