Hashing a file in Python

Question

I want python to read to the EOF so I can get an appropriate hash, whether it is sha1 or md5. Please help. Here is what I have so far:

import hashlib

inputF         


        

Answer 1

Here is a Python 3, POSIX solution (not Windows!) that uses mmap to map the object into memory.

import hashlib
import mmap

def sha256sum(filename):
    h  = hashlib.sha256()
    with open(filename, 'rb') as f:
        with mmap.mmap(f.fileno(), 0, prot=mmap.PROT_READ) as mm:
            h.update(mm)
    return h.hexdigest()