Getting server addresses from a csv file, check OpenSSL version to see if the are vulnerable to Heartbleed

OpenSSL_Checker

import ssl
import socket
import csv
import queue,threading
def checker(value):        
            try:
                        a=[]
                        target='{}'.format(value)
                        port=443
                        s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
                        ssl_socket=ssl.wrap_socket(s,cert_reqs=ssl.CERT_NONE)
                        ssl_socket.connect((target,port))
                        b=socket.gethostbyname(target)
                        a=(ssl_socket.cipher())
                        print ("{}-->IP Address-->{}-->OpenSSL version-->{}".format(value,b,a[1]))
            except:
                        pass
def threader():
            while True:
                        value=q.get()
                        
                        result=checker(value)
                        q.task_done()
q=queue.Queue()
for x in range(30):
            t=threading.Thread(target=threader)
            t.deamon=True
            t.start()
# get website names from https://zmap.io/heartbleed/
with open('Book1.csv',newline='') as csvfile:
            reader=csv.reader(csvfile,delimiter=',')
            for row in reader:
                        q.put(row[0])            
q.join()