Scraping names and images of products from a webpage I've written some code in python to scrape item names, category and the variety of images connected to each item from four different links out of a webpage. The main problem with which i had to hurdle is that each item may have one image or around five different images. Parsing those image links are no big deal but problem appears when it comes to save them in a local folder. Coder like me find it difficult cause few links contain single image and the rest contain several. It was hard for me to twitch the scraper in such a way so that all the images can be parsed and saved properly. I used four different links: two of which contain one image for each item and the rest contain five images for each item . However, my parser is running smoothly now. Here is what I did:

import requests
from lxml import html
import os

urls = [

    "http://www.floralart.com.au/products/39-melbourne-online-floristflorist-melbourne-flowers-delivery-funeral-flowers-free-online.aspx",
    "http://www.floralart.com.au/products/316-amore-mio-vase-arrangement.aspx",
    "http://www.floralart.com.au/products/90-wedding-florist-wedding-flowers-wedding-bouquet-bridal-flowers-flowers-for-weddings-artificial.aspx",
    "http://www.floralart.com.au/products/182-flowers-on-line-flower-bouquets-flower-deliveries-flowers-melbourne-cheap-flower-deliveries-mel.aspx",
]

def opening_link(link):

    response = requests.get(link)
    tree = html.fromstring(response.text)
    cat = tree.cssselect(".breadcrumb a")[1].text.strip()      #category name of the item

    for item in tree.cssselect(".product-details-page"):
        name = item.cssselect("h1.productname")[0].text.strip() if item.cssselect("h1.productname") else ""
        image_link = [img.attrib['src'] for img in item.cssselect(".picture a img")]             #for single image
        image_links = [img_link.attrib['src'] for img_link in item.cssselect(".overview a img") if '.jpeg' in img_link.attrib['src']]      #for list of images
        if image_links:           
            saving_images(cat,name,image_links)
        else:
            saving_images(cat,name,image_link)

def saving_images(cat, item_name, item_links):

    for link in item_links:
        response = requests.get(link, stream = True)
        image_name = link.split('/')[-1]

        if response.status_code == 200:
            os.chdir(r"C:\Users\ar\Desktop\mth")
            with open(image_name, 'wb') as f:
                for chunk in response.iter_content(1024):
                    f.write(chunk)

    print(item_name, cat)

if __name__ == '__main__':         
    for url in urls:
        opening_link(url)


Btw, if there are more than one image in a link then it is not necessary to make use of single image cause the list containing several images also contain the main image.
Code Style
There is a number of common PEP8 style guide violations which you may address:

imports to be properly organized
respect blank lines usage: remove the one in the urls list definition, use two newlines between the function definitions, remove extra blank lines at the beginning of the function bodies
inline comments should be 2 spaces from the right, there should be a single space after the # character
usage of spaces around the operators and in expressions and statements

Other Improvements
You can move some of your if checks from Python to CSS selectors. For instance:
[img_link.attrib['src'] for img_link in item.cssselect(&quot;.overview a img&quot;) if '.jpeg' in img_link.attrib['src']]

could be replaced with:
[img_link.attrib['src'] for img_link in item.cssselect(&quot;.overview a img[src$=jpeg]&quot;)]

When image_links is truthy, you send it to saving_images() function, which means that image_link is not used and you just wasted time defining it. How about refactoring it to be:
image_links = [img_link.attrib['src'] for img_link in item.cssselect(&quot;.overview a img[src$=jpeg]&quot;)]
if image_links:
    saving_images(cat, name, image_links)
else:  # single image
    image_link = [img.attrib['src'] for img in item.cssselect(&quot;.picture a img&quot;)]
    saving_images(cat, name, image_link)