  
  These tests deal with ensuring that we correctly map the model fields onto
  an appropriate set of serializer fields for each case.
  """
  from __future__ import unicode_literals
  
  import datetime
  import decimal
  import sys
  from collections import OrderedDict
  
 
</s> remove from __future__ import absolute_import, unicode_literals

 </s> add  </s> remove # coding: utf-8
from __future__ import unicode_literals

 </s> add  </s> remove from __future__ import unicode_literals

 </s> add  </s> remove from __future__ import unicode_literals

 </s> add  </s> remove try:
    from collections import ChainMap
except ImportError:
    ChainMap = False

 </s> add 
  
  These tests deal with ensuring that we correctly map the model fields onto
  an appropriate set of serializer fields for each case.
  """


  import datetime
  import decimal
  import sys
  from collections import OrderedDict
  
keep keep keep keep replace replace keep keep keep keep keep
 Dropped Python 2 compatibility. (#6615)

Thanks to Jon Dufresne (@jdufresne) for review.

Co-authored-by: Asif Saif Uddin <auvipy@gmail.com>
Co-authored-by: Rizwan Mansuri <Rizwan@webbyfox.com> 
tests/test_model_serializer.py