gistfile1.py

from django.http import StreamingHttpResponse
from django.conf import settings

import subprocess


def _backup():
    db_config = settings.DATABASES['default']
    db_config['HOST'] = db_config.get('HOST') or 'localhost'
    db_config['PORT'] = db_config.get('PORT') or  3306
    command = 'mysqldump -u{USER} -p{PASSWORD} -h{HOST} -P{PORT} {NAME}'.format(**db_config)

    popen = subprocess.Popen(command, stdout=subprocess.PIPE, shell=True)

    out = iter(popen.stdout.readline, "")
    for line in out:
        yield line


def backup(request):
    return StreamingHttpResponse(_backup())