Removed old import aliases.

import socket

import sys

from wsgiref import simple_server

from wsgiref.util import FileWrapper   # NOQA: for backwards compatibility

from django.core.exceptions import ImproperlyConfigured

from django.core.handlers.wsgi import ISO_8859_1, UTF_8

from django.utils.six.moves.urllib.parse import urlsplit, urlunsplit

from django.utils.translation import ugettext_lazy as _, ungettext_lazy

# Provide this import for backwards compatibility.

from django.core.validators import EMPTY_VALUES  # NOQA

__all__ = (

    'Field', 'CharField', 'IntegerField',

    'DateField', 'TimeField', 'DateTimeField', 'DurationField',

import threading

import unittest

import warnings

from unittest import skipIf         # NOQA: Imported here for backward compatibility

from unittest.util import safe_repr

from django.apps import apps

from django.utils.module_loading import import_string

from django.views.debug import ExceptionReporter, get_exception_reporter_filter

# Imports kept for backwards-compatibility in Django 1.7.

from logging import NullHandler  # NOQA

from logging.config import dictConfig  # NOQA

getLogger = logging.getLogger

# Default logging for Django. This sends an email to the site admins on every

        # First find the logging configuration function ...

        logging_config_func = import_string(logging_config)

        dictConfig(DEFAULT_LOGGING)

        logging.config.dictConfig(DEFAULT_LOGGING)

        # ... then invoke it with the logging settings

        if logging_settings:

import tempfile

import os

from wsgiref.util import FileWrapper

from django import forms

from django.contrib import admin

from django.core.exceptions import ValidationError

from django.core.files.storage import FileSystemStorage

from django.core.mail import EmailMessage

from django.core.servers.basehttp import FileWrapper

from django.conf.urls import url

from django.forms.models import BaseModelFormSet

from django.http import HttpResponse, StreamingHttpResponse