A simple paginated DJango view implementation

views.py

def chunks(data, n):
    """Yield successive n-sized chunks from data."""
    for i in range(0, len(data), n):
        yield data[i:i + n]
        
def get_page_number_from_request(request):
    """The `page` param will be from 1, 2, 3 ....so on, so we will have to translate it to
    an index that makes sense for an array"""
    page_no = request.GET.get('page') - 1
    return page_no if page_no > 0 else 0

def get_error_list(start, end):
    response = requests.get(apiUrl + "failed?start=" + start + "&end=" + end)
    response.raise_for_status()
    return response.json()
  
class ErrorListDateFilter(APIView):
    def get(self, request, start, end):
        try:
            data = get_error_list(start, end)
            page_no = get_page_number_from_request(request)
            page_size = request.GET.get('size')
            data_chunks = list(chunks(data, page_size))
            max_pages = len(data_chunks)
            if page_no > max_pages - 1:
                return Response({'message': '`page` number should be within 1-%d' % max_pages})
            
            return Response({'total': len(data), 'page': page_no + 1, 'size': page_size, 'data': data_chunks[page_no]})
        
        except Exception as ex:
            return Response({'message': 'Internal server error. Reason: %s' % ex.message})