Creating an MD5 Hash of A ZipFile

Question

I want to create an MD5 hash of a ZipFile, not of one of the files inside it. However, ZipFile objects aren't easily convertible to streams.

from hashlib import md5
from zipfile import ZipFile

zipped = ZipFile(r'/Foo/Bar/Filename.zip')
hasher = md5()
hasher.update(zipped)

return hasher.hexdigest()

The above code generates the error :TypeError: must be convertible to a buffer, not ZipFile.

Is there a straightforward way to turn a ZipFile into a stream?

There's no security issues here, I just need a quick an easy way to determine if I've seen a file before. hash(zipped) works fine, but I'd like something a little more robust if possible.

Answer 1

Just open the ZipFile as a regular file. Following code works on my machine.

from hashlib import md5
m = md5()
with open("/Foo/Bar/Filename.zip", "rb") as f:
    data = f.read() #read file in chunk and call update on each chunk if file is large.
    m.update(data)
    print m.hexdigest()