import re

with open("tmp_home.html", "r", encoding="utf-8") as f:
    content = f.read()

block8_pattern = re.compile(r'<!-- KMC EIGHTH SECTION START -->.*?<!-- KMC EIGHTH SECTION END -->', re.DOTALL)

with open("new_block8.html", "r", encoding="utf-8") as f:
    block8_new = f.read()

new_content = block8_pattern.sub(block8_new, content)

with open("tmp_home_updated.html", "w", encoding="utf-8") as f:
    f.write(new_content)