Removed some unused and duplicated imports.

import base64

import cPickle as pickle

import datetime

import re

from django import http, template

from django.contrib.admin import ModelAdmin

from django.contrib.auth import authenticate, login

from django.core.exceptions import ImproperlyConfigured

from django.db.models.base import ModelBase

from django.shortcuts import render_to_response

from django.utils.safestring import mark_safe

    pass

def _encode_post_data(post_data):

    from django.conf import settings

    pickled = pickle.dumps(post_data)

    pickled_md5 = md5_constructor(pickled + settings.SECRET_KEY).hexdigest()

    return base64.encodestring(pickled + pickled_md5)

def _decode_post_data(encoded_data):

    from django.conf import settings

    encoded_data = base64.decodestring(encoded_data)

    pickled, tamper_check = encoded_data[:-32], encoded_data[-32:]

    if md5_constructor(pickled + settings.SECRET_KEY).hexdigest() != tamper_check:

        This takes into account the USE_I18N setting. If it's set to False, the

        generated JavaScript will be leaner and faster.

        """

        from django.conf import settings

        if settings.USE_I18N:

            from django.views.i18n import javascript_catalog

        else: