Please note: In order to use the following code you need to install optional dependencies, see installation guide.
Every page of a PDF document can contain an arbitrary amount of images. The names of the files may not be unique.
from pypdf import PdfReader
reader = PdfReader("example.pdf")
page = reader.pages[0]
count = 0
for image_file_object in page.images:
with open(str(count) + image_file_object.name, "wb") as fp:
fp.write(image_file_object.data)
count += 1