Django settings to enable separate database for specified git branches

local_settings.py

# This snippet allows to use separate databases for specified git branches.
# These databases are created automatically as copies of the default database.
# It works only with PostgreSQL.
# If you use password to connect to your database you should add it to ~/.pgpass file!


# Add this to your local settings file.

from settings import *
import os, shlex, subprocess


BRANCH = None
for line in subprocess.Popen(shlex.split("/usr/local/bin/git branch"),
                             stdout=subprocess.PIPE).communicate()[0].split("\n"):
    if line.startswith("*"):
        BRANCH = line[2:]
        break


# New databases are created only for these branches.
# For other branches the default database is used.
SEPARATE_DB_BRANCHES = [
    "staging",
    ("awesome-branch", "awesome_database"),
]

for branch in SEPARATE_DB_BRANCHES:
    if isinstance(branch, (tuple, list)):
        branch, DB_NAME = branch
    else:
        DB_NAME = branch

    if branch != BRANCH:
        continue

    DB_NAME = "%s_%s" % (DATABASES["default"]["NAME"], DB_NAME)

    if DATABASES["default"]["NAME"] != DB_NAME:

        # Get the list of existing databases
        args = shlex.split("psql -U %(USER)s -A -c \"SELECT d.datname AS name FROM pg_catalog.pg_database d;\"" % DATABASES["default"])
        p = subprocess.Popen(args, stdout=subprocess.PIPE)
        existing_databases = p.communicate()[0].strip().split("\n")[:-1]
        if DB_NAME not in existing_databases:
            print "Creating database for branch", BRANCH
            args = shlex.split("psql -U %(USER)s -c \"CREATE DATABASE %(DB_NAME)s WITH TEMPLATE %(ORIGINAL)s;\"" % \
                               dict(USER=DATABASES["default"]["USER"],
                                    DB_NAME=DB_NAME,
                                    ORIGINAL=DATABASES["default"]["NAME"]
                                    )
                               )
            subprocess.Popen(args).wait()
        DATABASES["default"]["NAME"] = DB_NAME

    break

hi,
i have working a project to create separate database with exiting modal data and if users login first check credentials from my database than connect users database work next working . i got your code but i confused ho can i use your code so please give me a small program for give same work.

Thank You