Code:
#/usr/bin/env python
import socket, sys

def getvnc(ip):
    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.settimeout(5)
    except socket.error, err:
        print "[-] socket failed. error " + str(err[0])
        sys.exit()
       
    try:
        s.connect((ip, 5900))
        print "[!] " + ip + " " + s.recv(4096),
        s.close()
    except socket.error, err:
        print "[-] " + ip + " no service " + str(err)
       
def start(file):
    with open(file) as file:
        for ip in file:
            getvnc(ip.rstrip())

start("ip.txt")