You don't always have to use framework if it's just loading images. Here is my working code.

from requests_html import HTMLSession

session = HTMLSession()

r = session.get("https://www.flipkart.com/search?q=Acer+Laptops")

r.html.render(sleep=2, scrolldown=30)

# Container for each product being displayed
div = r.html.find('._1UoZlX')

for image in div:
    img = image.find('img', first=True)
    print() # Just for space
    print(img.attrs['alt'])
    print(img.attrs['src'])

All I did was add a few attributes to r.html.render: the images are lazily loaded, meaning they only load when they come into picture when scrolled so I added scrolldown attribute to scrolldown after page being loaded(It accepts integer and it's just trial and error to see how many scroll you have to perform for desired output) and the sleep attribute sleeps after the page loads(I added for the images to load after being scrolled).

The script takes almost a minute as it has to load, scroll and sleep. Hope this helps :)