#To define a particular parameter, replace the 'parameterName' inside itsm.getParameter('parameterName') with that parameter's name

URL_32='https://patchportal.one-us.comodo.com/portal/packages/spm/7 Zip/x86/7z1900.exe'## Here mention the 32 bit download url
URL_64='https://patchportal.one.comodo.com/portal/packages/spm/7%20Zip/x64/7z1900-x64.exe'## Here mention the 64 bit download url

import os
import ctypes
from subprocess import PIPE, Popen
import ctypes

if 'PROGRAMFILES(X86)' in os.environ.keys():
    fromURL=URL_64
else:
    fromURL=URL_32


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)

import subprocess
import ssl
with disable_file_system_redirection():
    import urllib
Down_path=os.environ['PROGRAMDATA']
fileName = fromURL.split('/')[-1]
DownTo = os.path.join(Down_path, fileName)
def downloadFile(DownTo, fromURL):
    try:
        with open(DownTo, 'wb') as f:
            try:
                context = ssl._create_unverified_context()
                f.write(urllib.urlopen(fromURL,context=context).read())
            except:
                f.write(urllib.urlopen(fromURL).read())
        if os.path.isfile(DownTo):
            return '{} - {}KB'.format(DownTo, os.path.getsize(DownTo)/1000)
		
    except:
        return 'Please Check URL or Download Path!'

if __name__=='__main__':
    print downloadFile(DownTo, fromURL )
    fileName = fromURL.split('/')[-1]
    print fileName

INSTALLDIR=os.environ['PROGRAMFILES']+r'\7-Zip'

import shutil
try:
    if os.path.exists(DownTo):
        print "check"
        ec='%s /S INSTALLDIR=%s'%(DownTo,INSTALLDIR)
        print ec
        OBJ = Popen(ec, shell = True, stdout = PIPE, stderr = PIPE)
        out, err = OBJ.communicate()
        RET = OBJ.returncode
        if RET == 0:
            print "7Zip is installed"
        else:
            print "7Zip is not installed"

    else:
        print "Please check the path"
        
except Exception as err :
    print err
	
if os.path.exists(DownTo):
    os.remove(DownTo)