Handling output of python socket recv

Question

Apologies for the noob Python question but I've been stuck on this for far too long.

I'm using python sockets to receive some data from a server. I do this:


data = self.socket.recv(4)
print "data is ", data
print "repr(data) is ", repr(data)

The output on the console is this:

data is
repr(data) is '\x00\x00\x00\x01'

I want to turn this string containing essentially a 4 byte number into an int - or actually what would be a long in C. How can I turn this data object into a numerical value that I can easily manage?

grieve · Accepted Answer · 2009-03-27 21:13:45Z

10

You probably want to use struct.

The code would look something like:

import struct

data = self.socket.recv(4)
print "data is ", data
print "repr(data) is ", repr(data)
myint = struct.unpack("!i", data)[0]

edited Mar 27, 2009 at 21:13

answered Mar 27, 2009 at 20:32

grieve

13.5k10 gold badges53 silver badges62 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

chrism1 Over a year ago

Thanks. I actually had to do "myint = unpack("!i", data)[0]" since it's big-endian and it comes out as a tuple. If you want to edit I'll mark your answer correct. Again, thanks for the help.

grieve Over a year ago

Missed the tuple part. :) Edited the answer per your request.

Jason Baker Over a year ago

Just to be pedantic, I believe the last line should also be: myint = struct.unpack("!i", data)[0]

Collectives™ on Stack Overflow

Handling output of python socket recv

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related