old_contents: from django.shortcuts import get_object_or_404
  from rest_framework.generics import RetrieveAPIView
  
  from jarbas.core.models import Company
  from jarbas.core.serializers import CompanySerializer
  from jarbas.chamber_of_deputies.serializers import format_cnpj
  
  class CompanyDetailView(RetrieveAPIView):
  
      lookup_field = 'cnpj'
      queryset = Company.objects.all()
      serializer_class = CompanySerializer
  
      def get_object(self):
          cnpj = self.kwargs.get(self.lookup_field, '00000000000000')
          return get_object_or_404(Company, cnpj=format_cnpj(cnpj))
  
new_contents: from django.shortcuts import get_object_or_404
  from rest_framework.generics import RetrieveAPIView
  
  from jarbas.core.models import Company
  from jarbas.core.serializers import CompanySerializer
  from jarbas.chamber_of_deputies.serializers import format_cnpj
  
  
  class CompanyDetailView(RetrieveAPIView):
  
      lookup_field = 'cnpj'
      queryset = Company.objects.all()
      serializer_class = CompanySerializer
  
      def get_object(self):
          cnpj = self.kwargs.get(self.lookup_field, '00000000000000')
          return get_object_or_404(Company, cnpj=format_cnpj(cnpj))
  
subject: Add blank line - pep8