Download and Stream Hash #python

download_stream_hash.py

import hashlib
from urllib.request import urlopen
from urllib.error import HTTPError

file_url = 'https://somefile'
file_path = 'somefile'
sha256_hash = '751baea102ae63f0990607883ff819cfe18276d5116605673c5ff7e42e34e945'

hash = hashlib.sha256()
response = urlopen(file_url)

with open(file_path, mode='wb') as f:
    for chunk in iter(lambda: response.read(65535), b''):
        hash.update(chunk)
        f.write(chunk)

if hash.hexdigest() != sha256_hash:
    os.remove(file_path)
    raise Exception('Upstream file changed!')