How to prevent Selenium from opening a pop-up to save the file?

Question

I'm scraping the site Quicker.com but every time getting an error on random pages.
The error is:

UnexpectedAlertPresentException: Alert Text: C:\Users\HEYPIL~1\AppData\Local\Temp\Pkwnr4IA.php.part could not be saved, because the source file could not be read.

Try again later, or contact the server administrator.
<super: <class 'WebDriverException'>, <UnexpectedAlertPresentException object>>

My code:

from selenium import webdriver
import csv
import re
import hashlib
from selenium.common.exceptions import UnexpectedAlertPresentException
from selenium.common.exceptions import WebDriverException
import socket
import time
import datetime

ts = time.time()
st = datetime.datetime.fromtimestamp(ts).strftime('%Y-%m-%d %H:%M:%S')
date = st.encode('utf8')


IPAdd = socket.gethostbyname(socket.gethostname())

counter = 5
initial = []

base = "http://mumbai.quikr.com/Individual/0-50000000/Houses-Apartments-for-Sale/w1072?imageAds=Y&l=You_are-Price"
string = "&page="



while(counter == 5 or counter < 40):
    base2 = base+string+str(counter)
  if  (counter < 39):
    initial.append(base2)

elif(counter == 40):
    initial.append(base)

else:
    base2 = base

counter += 1
for n in initial:

result = []

driver = webdriver.Firefox()
driver.get(n)

main_page = '//a[@class="adttllnk unbold"]'
for a in driver.find_elements_by_xpath(main_page):
    l = a.get_attribute('href')
    result.append(l)

print len(result)
driver.close()



for url in result:
    try:
    
        driver = webdriver.Firefox()
        driver.get(url)
        items = []

        desc_path = '//div[@id="ad_description"]'
        img_path = '//div[@class="bigImg_wapp"]//img[@src]'
        prop = '//div[@itemprop="name"]//h1[@class="ad_title translate"]'
        amenities = '//div[@class="ad-atrbt-panel"]//span[@class="ad-atrbt-val"]//span[@class="attribVal newattribVal"]'
        phone = '//span[@class="NoVerified-Text"]'

        for x1 in driver.find_elements_by_xpath(img_path):
            img = (x1.get_attribute('src')).encode('utf8')
            print '\n'+img

        for x2 in driver.find_elements_by_xpath(desc_path):
            desc = (x2.text).encode('utf8')
            print '\n'+ desc

        for x3 in driver.find_elements_by_xpath(prop):
            prop_title = (x3.text).encode('utf8')
            print '\n'+prop_title

        for x4 in driver.find_elements_by_xpath(amenities):
            value = (x4.text).encode('utf8')
            items.append(value)
        print '\n'
        print items
        locality = items[0]
        locality1 = locality.encode('utf8')
        a = (locality1 if (isinstance(locality1,int) == False) else "")

        bhk = items[1]
        bhk1 = bhk.encode('utf8')
        if(bhk1 == "4+ BHK"):
            b = "4"
        else:
            bhk2 = [int(z) for z in bhk1.split() if z.isdigit()]
            b = ((str(bhk2).strip('[')).strip(']')).strip()

        furnish = items[2]
        if(isinstance(furnish,int) == False ):
            furnish1 = furnish.encode('utf8')
            if((furnish1 == "Semi-Furnished") or (furnish1 == "Unfurnished") or (furnish1 == "Fully Furnished") or (furnish1 == "Unfurnished,Unf...")):
                c = furnish1
            else:
                d = furnish1
        elif(isinstance(furnish,int) == True):
            furnish1 = furnish.encode('utf8')
            d = furnish1
        else:
            c = ""

        sqft = items[3]
        if(isinstance(sqft,int)==True):
            sqft1 = [int(xyz) for xyz in sqft.split() if xyz.isdigit()]
            sqft2 = ((str(sqft1).strip('[')).strip(']')).strip()
            d = sqft2.encode('utf8')
        elif(isinstance(sqft,int)==False):
            sqft1 = sqft.encode('utf8')
            if((sqft1 == "Semi-Furnished") or (sqft1 == "Unfurnished") or (sqft1 == "Fully Furnished") or (sqft1 == "Unfurnished,Unf...")):
                c = sqft1
            else:
                d = sqft1
                
            
        else:
            d = ""

        atz = '\t'

        print a,atz,b,atz,c,atz,d

        for x5 in driver.find_elements_by_xpath(phone):
            biz = (((x5.text).lstrip('+91')).strip()).encode('utf8')
            if(len(biz)== 9):
               biz_phone = '9'+biz
               
            elif(len(biz) < 7 and len(biz) > 4):
                biz_phone = '080'+biz

            elif(len(biz) > 9 or len(biz) < 12):
                biz_phone = biz

            elif(len(biz) == 4 or len(biz) < 4):
                biz_phone = biz.strip(biz)

            else:
                print '\nInvalid Business_phone'

            print '\n'+biz_phone

        driver.close()




        hash_key = hashlib.md5("marketing@"+biz_phone+".com"+"Individual"+prop_title).hexdigest()
        unique_key = ('I_'+hash_key).encode('utf8')

        
        
    except (NameError, IndexError, WebDriverException, UnexpectedAlertPresentException) as e:
        print "Failed to open: "+url
        driver.close()

        fieldname = ['Date','URL']
        with open("C:\Users\Heypillow\Desktop\scrapWork\properties\\Failed_to_open_url.csv",'a') as h:
            write = csv.DictWriter(h,fieldnames=fieldname,lineterminator = '\n')
            write.writerow({'Date':date,
                            'URL':url})

I've blocked the pop-up in Firefox() but yet a pop-up is coming which addressing me to save a .php file and raises this exception.
I've already used that exception in the "except" part yet it's interrupting the code to work further and it's getting stopped just after this exception rises.

So, every time this exception rises, I have to restart the program. Thus I would like to download all the data by running the code through out the night,which is impossible with this circumstances…

How can I prevent this pop-up from opening?

(If I would have been able to upload a screenshot of the pop-up,it would have been easier to understand it.)