CODEWITHSUNDEEP
pythonpython-3.xsockets
Firaga
Firaga

Reputation: 5

TypeError: a bytes-like object is required, not 'str' when writing to a file

import socket

def Main():
    host = '127.0.0.1'
    port = 5001

    server = ('127.0.0.1',5000)

    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.bind((host, port))

    message = input("-> ")
    while message != 'q':
        s.sendto (message, server)
        data, addr = s.recvfrom(1024)
        print ('Received from server: ' + (data))
        message = input("-> ")
    s.close()

if __name__ == '__main__':
    Main()

When I run this code the line s.sendto (message, server) causes a TypeError: a bytes-like object is required, not 'str'.

How do you fix this kind of problem? I tried searching the internet but can't find a solution.

Upvotes: 0

Views: 2701

Answers (2)

AJAY KACHHIYAPATEL
AJAY KACHHIYAPATEL

Reputation: 169

The error is due to the fact you are not encoding the message. Just change:

c.sendto(message, server)

to

c.sendto(message.encode(), server)

in your code.

Example:

    import  socket
    
    s=socket.socket()
    port=12345
    s.bind(('',port))
    print("Socket bind succesfully")
    s.listen(5)
    // note this point 
    message="This is message send to client "
    
    while True:
        c,addr=s.accept()
        // here is error occured 
        c.send(message)
        c.close()

This is will result in an error message:

    c.send(message)
    TypeError: a bytes-like object is required, not 'str'

and in order to fix it, we need to change:

c.send(message)

to

c.send(message.encode())

Upvotes: 1

blue note
blue note

Reputation: 29099

Sockets read and write bytes, not strings (that's a property of sockets in general, not a python-specific implementaiton choice). That's the reason for the error.

Strings have an encode() methods that transforms them to byte-objects. So, instead of writing my_text, write my_text.encode() to your socket.

Similarly, when you read for the socket, you get a bytes-like object, on which you can call input_message.decode() to convert it into string

Upvotes: 5

Related Questions