old_contents: "Python and Django compatibility functions."
  from __future__ import unicode_literals
  
  from django.conf import settings
  
  
  AUTH_USER_MODEL = getattr(settings, 'AUTH_USER_MODEL', 'auth.User')
  
  
  try:
      from django.utils.crypto import get_random_string
  except ImportError: # pragma: no cover
      # Backport implementation from Django 1.4
      import hashlib
      import random
      import string
      import time
      try:
          random = random.SystemRandom()
          using_sysrandom = True
      except NotImplementedError:
          import warnings
          warnings.warn('A secure pseudo-random number generator is not available '
                        'on your system. Falling back to Mersenne Twister.')
          using_sysrandom = False
  
      def get_random_string(length=12, allowed_chars=string.ascii_letters + string.digits):
          "Returns a securely generated random string."
          if not using_sysrandom:
              # Re-seed random
              bytes = b"{0}{1}{2}".format(random.getstate(), time.time(), settings.SECRET_KEY)
              random.seed(hashlib.sha256(bytes).digest())
          return ''.join([random.choice(allowed_chars) for i in range(length)])
  
  
  try:
      from django.contrib.auth import get_user_model
  except ImportError: # pragma: no cover
      # Django < 1.5
      from django.contrib.auth.models import User
      User.USERNAME_FIELD = 'username'
      get_user_model = lambda: User
  
  
  # urllib
  try:
      from urllib.parse import urlencode, parse_qs, urlparse
  except ImportError: # pragma: no cover
      # Python 2.X
      from urllib import urlencode
      from urlparse import parse_qs, urlparse
  
  
  try:
      from django.utils.encoding import force_text, smart_bytes, force_bytes
  except ImportError: # pragma: no cover
      from django.utils.encoding import force_unicode as force_text
      from django.utils.encoding import smart_str as smart_bytes
      from django.utils.encoding import force_str as force_bytes
  
  # Vendored six
  try:
      from django.utils import six
  except:
      from requests.packages.urllib3.packages import six
new_contents: "Python and Django compatibility functions."
  from __future__ import unicode_literals
  
  from django.conf import settings
  
  
  AUTH_USER_MODEL = getattr(settings, 'AUTH_USER_MODEL', 'auth.User')
  
  
  try:
      from django.utils.crypto import get_random_string
  except ImportError: # pragma: no cover
      # Backport implementation from Django 1.4
      import hashlib
      import random
      import string
      import time
      try:
          random = random.SystemRandom()
          using_sysrandom = True
      except NotImplementedError:
          import warnings
          warnings.warn('A secure pseudo-random number generator is not available '
                        'on your system. Falling back to Mersenne Twister.')
          using_sysrandom = False
  
      def get_random_string(length=12, allowed_chars=string.ascii_letters + string.digits):
          "Returns a securely generated random string."
          if not using_sysrandom:
              # Re-seed random
              bytes = b"{0}{1}{2}".format(random.getstate(), time.time(), settings.SECRET_KEY)
              random.seed(hashlib.sha256(bytes).digest())
          return ''.join([random.choice(allowed_chars) for i in range(length)])
  
  
  try:
      from django.contrib.auth import get_user_model
  except ImportError: # pragma: no cover
      # Django < 1.5
      from django.contrib.auth.models import User
      User.USERNAME_FIELD = 'username'
      get_user_model = lambda: User
  
  
  # urllib
  try:
      from urllib.parse import urlencode, parse_qs, urlparse
  except ImportError: # pragma: no cover
      # Python 2.X
      from urllib import urlencode
      from urlparse import parse_qs, urlparse
  
  
  try:
      from django.utils.encoding import force_text, smart_bytes, force_bytes
  except ImportError: # pragma: no cover
      from django.utils.encoding import force_unicode as force_text
      from django.utils.encoding import smart_str as smart_bytes
      try:
          from django.utils.encoding import force_str as force_bytes
      except ImportError:
          # This didn't get back-ported to 1.4.X
          force_bytes = smart_bytes
  
  # Vendored six
  try:
      from django.utils import six
  except:
      from requests.packages.urllib3.packages import six
subject: Update compatibility for 1.4.2 which didn't get force_bytes backported.