  """
  Helper functions for mapping model fields to a dictionary of default
  keyword arguments that should be used for their equivelent serializer fields.
  """
  from django.core import validators
  from django.db import models
  from django.utils.text import capfirst
  from rest_framework.compat import clean_manytomany_helptext
  from rest_framework.validators import UniqueValidator
  import inspect
 
</s> remove import inspect
 </s> add  </s> remove from django.db.models.query import QuerySet
 </s> add import uuid
import json
import decimal
import datetime
 </s> remove from rest_framework.exceptions import ValidationError
from rest_framework.settings import api_settings
from rest_framework.utils import html, representation, humanize_datetime
import collections
import copy
import datetime
import decimal
import inspect
import re
import uuid
 </s> add 
import inspect

  """
  Helper functions for mapping model fields to a dictionary of default
  keyword arguments that should be used for their equivelent serializer fields.
  """
import inspect

  from django.db import models
  from django.utils.text import capfirst
  from rest_framework.compat import clean_manytomany_helptext
  from rest_framework.validators import UniqueValidator
  import inspect
keep keep keep keep replace keep keep keep keep keep
 Cleanup import following PEP 8 style guide 
rest_framework/utils/field_mapping.py