Sending string message from client to server Python

Question

I am being unable to run my code as soon as I add these send line in client and recv line in the server. I don't know what's wrong. Without them, the program is running perfectly. I am pasting just the smallest possible code for the ease of debugging because without these lines, code is perfect.

Client.py

    print ('Opening file for editting.....')
with open('C:\\Users\\dell\\Desktop\\received_file.txt', 'ab') as e:
    e.write('Ya Allah tera shukar')
e.close()
print ('Editting Done!!!')
s.send("Trial Message")
s.close()
print ("Connection closed")

Server.py

while (l): #Keep sending it until EOF id found
    conn.send(l) #Keep sending the opened file
    print(repr(l)) #repr(1) gives the string representation of contents of the file. The repr() of a string adds string quotes and backslashes:
    l = f.read(1024) #Keep reading the opened file so the contents appear on the server too
f.close()
print('Done sending the file')
print conn.recv(1024) #This is not receiving the trial message sent by client
conn.send('Thank you for connecting')
conn.close()

Answer 1

Some links for python client/server toturials

http://www.bogotobogo.com/python/python_network_programming_server_client.php

https://docs.python.org/3/howto/sockets.html

https://pymotw.com/2/socket/tcp.html

(Very) basic Python client socket example