Generate md5checksum of local file equivalent to Google Drive/Cloud Storage's

google_drive_md5sum.py

from hashlib import md5

def google_md5sum(filen):
    """Return Google Drive /Cloud Storage hexadecimal equivalent md5sum.
    
    Updates md5 hashalg by reading 8k chunks. Adapted from gsutil."""
    hashalg = md5()
    with open(filen, "rb") as f:
        f.seek(0)
        while True:
            data = f.read(8 * 1024)
            if not data:
                break
            hashalg.update(data)
    return hashalg.hexdigest()