server.py

# first of all import the socket library 
import socket                
  
# next create a socket object 
s = socket.socket()          
print("Socket successfully created")
  
# reserve a port on your computer in our 
# case it is 12345 but it can be anything 
port = 12345                
  
# Next bind to the port 
# we have not typed any ip in the ip field 
# instead we have inputted an empty string 
# this makes the server listen to requests  
# coming from other computers on the network 
s.bind(('', port))         

print ("socket binded to %s" %(port)) 
  
# put the socket into listening mode 
s.listen(5)      
print( "socket is listening")            
  
# a forever loop until we interrupt it or  
# an error occurs 
while True: 
  
   # Establish connection with client. 
   c, addr = s.accept()      
   print ('Got connection from', addr) 
   a =  c.recv(1024)
   a = a.decode('utf-8')
   a = a.split(':')
   print(a)
   if(a[0]=='divide'):
       retval = int(a[1])/int(a[2])
   # send a thank you message to the client. 
   retval = str(retval)
   retval = retval.encode('utf-8') 
   c.send(retval) 
   c.close()