Source code for utility_modules.checksum

#!/usr/bin/env python
def buffer_file(f_name, block_size = 1024):
    while True:
        buffer = f_name.read(block_size)
        if not buffer:
            break
        yield buffer

def md5_checksum(f_name):
    import hashlib
    md5 = hashlib.md5()
    
    with open(f_name) as f:
        for buffer in buffer_file(f):
            md5.update(buffer)
    
    return(md5.hexdigest())