from subprocess import Popen, PIPE
import ctypes

class disable_file_system_redirection:
    _disable = ctypes.windll.kernel32.Wow64DisableWow64FsRedirection
    _revert = ctypes.windll.kernel32.Wow64RevertWow64FsRedirection
    def __enter__(self):
        self.old_value = ctypes.c_long()
        self.success = self._disable(ctypes.byref(self.old_value))
    def __exit__(self, type, value, traceback):
        if self.success:
            self._revert(self.old_value)

def ecmd(command):   
    with disable_file_system_redirection():
        obj = Popen(command, shell = True, stdout = PIPE, stderr = PIPE)
    out, err = obj.communicate()
    ret=obj.returncode
    return ret,out,err

ret,out,err = ecmd('nslookup myip.opendns.com. resolver1.opendns.com | findstr "Address:"')

if ret==0:
    if out:
        External_IP_Address = out.strip().splitlines()[-1]
        print("External IP %s"%(External_IP_Address))
    else:
        print("couldn't get any information about External IP Address using nslookup")
else:
    if err:
        print("An error occurred: %s"%(err))
    else:
        print("Something went wrong while executing the command")
        print("return code: %s"%(ret))