old_contents: import json
  
  import requests
  
  from . import exceptions
  
  URL = 'http://www.viacep.com.br/ws/{}/json'
  
  
  def fetch_address(cep):
  
      try:
          response = requests.get(URL.format(cep))
  
          if response.status_code == 200:
  
              # Transforma o objeto requests em um dict
              address = json.loads(response.text)
  
              if address.get('erro'):
                  raise exceptions.CEPNotFound()
  
              return {
                  'bairro': address.get('bairro', ''),
                  'cep': address.get('cep', ''),
                  'cidade': address.get('localidade', ''),
                  'logradouro': address.get('logradouro', ''),
                  'uf': address.get('uf', ''),
                  'complemento': address.get('complemento', ''),
              }
  
          elif response.status_code == 400:
              raise exceptions.InvalidCEP()
  
          else:
              raise exceptions.BaseException('Other error. Status code: %d' % response.status_code)  # noqa
  
      except requests.exceptions.ConnectionError as errc:
          raise exceptions.ConnectionError(errc)
  
      except requests.exceptions.Timeout as errt:
          raise exceptions.Timeout(errt)
  
      except requests.exceptions.HTTPError as errh:
          raise exceptions.HTTPError(errh)
  
      except requests.exceptions.RequestException as e:
          raise exceptions.BaseException(e)
  
new_contents: import json
  
  import requests
  
  from . import exceptions
  
  URL = 'http://www.viacep.com.br/ws/{}/json'
  
  
  def fetch_address(cep):
  
      try:
          response = requests.get(URL.format(cep))
  
          if response.status_code == 200:
  
              # Transforma o objeto requests em um dict
              address = json.loads(response.text)
  
              if address.get('erro'):
                  raise exceptions.CEPNotFound()
  
              return {
                  'bairro': address.get('bairro') or '',
                  'cep': address.get('cep') or '',
                  'cidade': address.get('localidade') or '',
                  'logradouro': address.get('logradouro') or '',
                  'uf': address.get('uf') or '',
                  'complemento': address.get('complemento') or '',
              }
  
          elif response.status_code == 400:
              raise exceptions.InvalidCEP()
  
          else:
              raise exceptions.BaseException('Other error. Status code: %d' % response.status_code)  # noqa
  
      except requests.exceptions.ConnectionError as errc:
          raise exceptions.ConnectionError(errc)
  
      except requests.exceptions.Timeout as errt:
          raise exceptions.Timeout(errt)
  
      except requests.exceptions.HTTPError as errh:
          raise exceptions.HTTPError(errh)
  
      except requests.exceptions.RequestException as e:
          raise exceptions.BaseException(e)
  
subject: Fix key error in requests from viacep