
class SpamListsError(Exception):
    '''There was an error during testing a url or host'''
    
class UnknownCodeError(SpamListsError):
    '''The classification code from the service was not recognized'''
    
class UnathorizedAPIKeyError(SpamListsError):
    '''The API key used to query the service was not authorized'''


class SpamListsError(Exception):
    '''There was an error during testing a url or host'''
    
class UnknownCodeError(SpamListsError, KeyError):
    '''The classification code from the service was not recognized'''
    
class UnathorizedAPIKeyError(SpamListsError):
    '''The API key used to query the service was not authorized'''

Make UnknownCodeError additionally extend KeyError
Make UnknownCodeError additionally extend KeyError

  
  class SpamListsError(Exception):
      '''There was an error during testing a url or host'''
      
- class UnknownCodeError(SpamListsError):
+ class UnknownCodeError(SpamListsError, KeyError):
      '''The classification code from the service was not recognized'''
      
  class UnathorizedAPIKeyError(SpamListsError):
      '''The API key used to query the service was not authorized'''
  
Make UnknownCodeError additionally extend KeyError
## Code Before:

class SpamListsError(Exception):
    '''There was an error during testing a url or host'''
    
class UnknownCodeError(SpamListsError):
    '''The classification code from the service was not recognized'''
    
class UnathorizedAPIKeyError(SpamListsError):
    '''The API key used to query the service was not authorized'''

## Instruction:
Make UnknownCodeError additionally extend KeyError
## Code After:

class SpamListsError(Exception):
    '''There was an error during testing a url or host'''
    
class UnknownCodeError(SpamListsError, KeyError):
    '''The classification code from the service was not recognized'''
    
class UnathorizedAPIKeyError(SpamListsError):
    '''The API key used to query the service was not authorized'''
