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finding who's online

Discuss finding who's online in the Python Programming forum on Dev Shed.
finding who's online Python Programming forum discussing coding techniques, tips and tricks, and Zope related information. Python was designed from the ground up to be a completely object-oriented programming language.

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  #1  
Old October 6th, 2003, 08:56 AM
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Question finding who's online
I've seen this question and quite a few answers in PHP and I'm getting some ideas for doing it in python. That is finding out who's online at any particular time on a particular webpage.

I'm guessing I'll be using some kind of temp file and the os.environ["REMOTE_ADDR"]
function, but I was wondering if anybody had any ideas or snippets of success before?

Thanks,
Benjamin
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Old October 7th, 2003, 07:39 PM
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"online at any particular time on a particular webpage"? You mean like on here? The only real way to do it, unless there's some sort of other way to access that data, is to just parse the webpage for it.
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Old October 8th, 2003, 02:04 AM
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Yes, online at that particular moment for that webpage, similar to the way devshed's forums have at the bottom user's and who they are. Any ideas?

Thanks,
Benjamin
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Old October 8th, 2003, 07:18 AM
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Surly to get the info your program would have to be on the webserver your tageting.

Quote:
That is finding out who's online at any particular time on a particular webpage


it's got to be hard if not impossibe to just pick a website and get a list or remote IP's on that page.. maybe you could post a few links to the idea's you were given on how to do it in PHP?

Mark
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Old October 8th, 2003, 07:35 AM
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Sorry should have made that clear, it's for my own site. It's got php, so I could use that, but I'd rather do it in python as not only do I like python more, I've already got python code running.

So yes, I've got access to the server, all the cgi variables and wish to go about doing something like this(php, sorry for the length) get's who's online using files:

PHP Code:
<?php
//vars
$file_name = "data.txt";
$c_time = time();
$timeout = 300;
$time = $c_time - $timeout;

//write to file ip and time
$fp = fopen($file_name, "a");
$write = $REMOTE_ADDR."||".$c_time."\n";
fwrite($fp, $write);
fclose($fp);

//open file into array
$file_array = file($file_name);
$online_array = array();//create online array
foreach($file_array as $data){
list($ip, $user_time) = explode("||", $data);
if($user_time >= $time){
array_push($online_array, $ip);
}//end if
}//end foreach

//count and output data
$online = array_unique($online_array);
$online = count($online);
if($online == "1"){
echo "User online: $online";
}else{
echo "Users online: $online";
}
?>



in python.
Cheers,
Benjamin
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  #6  
Old October 8th, 2003, 10:19 AM
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OK, this should do the same thing! it's untested and could be improved a little but hey

Code:
import os, time

filename = 'data.txt'
timenow = time.time() - 300
online = {}

file(filename, 'a').write(str(os.environ('REMOTE_ADDR')) + '-' + str(time.time()) + '\n')

for user in file(filename, 'r').readlines():
	user = user.strip().split('-')
	if user[1] >= timenow:
		online[user[0]] = user[1]

users = ', '.join(online.keys())
	
if len(online.keys()) == 1:
	print 'User online:', users
else:
	print 'Users online:', users


Have fun,
Mark.
Last edited by netytan : October 8th, 2003 at 10:23 AM.
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  #7  
Old October 8th, 2003, 06:43 PM
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Thanks Mark, I'll have a play and check it out.
Cheers,
Benjamin
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