old_contents: # encoding: utf-8
  
  """
  .. codeauthor:: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>
  """
  
  import sqlite3
  
  from tabledata import NameValidationError  # noqa: W0611
  
  
  class DatabaseError(sqlite3.DatabaseError):
      """
      Exception raised for errors that are related to the database.
  
      .. seealso::
          - `sqlite3.DatabaseError <https://docs.python.org/3/library/sqlite3.html#sqlite3.DatabaseError>`__
      """
  
  
  class NullDatabaseConnectionError(Exception):
      """
      Exception raised when executing an operation of
      :py:class:`~simplesqlite.SimpleSQLite` instance without connection to
      a SQLite database file.
      """
  
  
  class TableNotFoundError(DatabaseError):
      """
      Exception raised when accessed the table that not exists in the database.
      """
  
  
  class AttributeNotFoundError(DatabaseError):
      """
      Exception raised when accessed the attribute that not exists in the table.
      """
  
  
  class SqlSyntaxError(Exception):
      """
      Exception raised when a SQLite query syntax is invalid.
      """
  
  
  class OperationalError(sqlite3.OperationalError):
      """
      Exception raised when failed to execute a query.
      """
  
      @property
      def message(self):
          return self.__message
  
      def __init__(self, *args, **kwargs):
          self.__message = kwargs.pop("message", None)
  
          super(OperationalError, self).__init__(*args, **kwargs)
  
new_contents: # encoding: utf-8
  
  """
  .. codeauthor:: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>
  """
  
  import sqlite3
  
  from tabledata import NameValidationError  # noqa: W0611
  
  
  class DatabaseError(sqlite3.DatabaseError):
      """
      Exception raised for errors that are related to the database.
  
      .. seealso::
          - `sqlite3.DatabaseError <https://docs.python.org/3/library/sqlite3.html#sqlite3.DatabaseError>`__
      """
  
  
  class NullDatabaseConnectionError(DatabaseError):
      """
      Exception raised when executing an operation of
      :py:class:`~simplesqlite.SimpleSQLite` instance without connection to
      a SQLite database file.
      """
  
  
  class TableNotFoundError(DatabaseError):
      """
      Exception raised when accessed the table that not exists in the database.
      """
  
  
  class AttributeNotFoundError(DatabaseError):
      """
      Exception raised when accessed the attribute that not exists in the table.
      """
  
  
  class SqlSyntaxError(Exception):
      """
      Exception raised when a SQLite query syntax is invalid.
      """
  
  
  class OperationalError(sqlite3.OperationalError):
      """
      Exception raised when failed to execute a query.
      """
  
      @property
      def message(self):
          return self.__message
  
      def __init__(self, *args, **kwargs):
          self.__message = kwargs.pop("message", None)
  
          super(OperationalError, self).__init__(*args, **kwargs)
  
subject: Modify the base error class