old_contents: """dberrors: database exception classes for SQLObject.
  
     These classes are dictated by the DB API v2.0:
     
     http://www.python.org/topics/database/DatabaseAPI-2.0.html
  """
  
  
  class Error(StandardError):
      pass
  
  
  class Warning(StandardError):
      pass
  
  
  class InterfaceError(Error):
      pass
  
  
  class DatabaseError(Error):
      pass
  
  
  class InternalError(DatabaseError):
      pass
  
  
  class OperationalError(DatabaseError):
      pass
  
  
  class ProgrammingError(DatabaseError):
      pass
  
  
  class IntegrityError(DatabaseError):
      pass
  
  
  class DataError(DatabaseError):
      pass
  
  
  class NotSupportedError(DatabaseError):
      pass
  
  
  class DuplicateEntryError(IntegrityError):
      pass
  
new_contents: """dberrors: database exception classes for SQLObject.
  
     These classes are dictated by the DB API v2.0:
     
     http://www.python.org/topics/database/DatabaseAPI-2.0.html
  """
  
  import sys
  if sys.version_info[0] >= 3:
      StandardError = Exception
  
  class Error(StandardError):
      pass
  
  
  class Warning(StandardError):
      pass
  
  
  class InterfaceError(Error):
      pass
  
  
  class DatabaseError(Error):
      pass
  
  
  class InternalError(DatabaseError):
      pass
  
  
  class OperationalError(DatabaseError):
      pass
  
  
  class ProgrammingError(DatabaseError):
      pass
  
  
  class IntegrityError(DatabaseError):
      pass
  
  
  class DataError(DatabaseError):
      pass
  
  
  class NotSupportedError(DatabaseError):
      pass
  
  
  class DuplicateEntryError(IntegrityError):
      pass
  
subject: Add python3 alias