Web scrapping gives different output every time

from urllib import request
from bs4 import BeautifulSoup
page_url = "http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=-1&IsNodeId=1&Description=GTX&bop=And&Page=1&PageSize=36&order=BESTMATCH"
uclient = request.urlopen(page_url) #open a webclient
html_page = uclient.read()
page_soup = BeautifulSoup(html_page,"html.parser") 
uclient.close()
containers = page_soup.find_all("div",{"class" :"item-cell"}) 
title_list = []
for contain in containers:
    title = contain.select("img")[0]["title"]
    print(title)# for troubleshooting
    print(len(title_list)) #for troubleshooting
    title_list.append(title)
print(title_list)

Can someone pls help in troubleshooting? Everytime i run the code , once it returns 12 values sometimes 28 , sometimes 30 and then it gives an error .:

Input In [67], in <cell line: 16>()
     15 title_list = []
     16 for contain in containers:
---> 17     title = contain.select("img")[0]["title"]
     18     print(title)# for troubleshooting
     19     print(len(title_list)) #for troubleshooting

File C:\ProgramData\Anaconda3\lib\site-packages\bs4\element.py:1519, in Tag.__getitem__(self, key)
   1516 def __getitem__(self, key):
   1517     """tag[key] returns the value of the 'key' attribute for the Tag,
   1518     and throws an exception if it's not there."""
-> 1519     return self.attrs[key]

KeyError: 'title'