old_contents: """
  Overview
  --------
  The database package exports the following classes, functions and exceptions:
  
      :classes:
          - Database
      :functions:
          - display_entries
      :exceptions:
          - EntryAlreadyAddedError
          - NoSuchEntryError
          - EntryAlreadyStarredError
          - EntryAlreadyUnstarredError
          - EntryNotFoundError
          - TagAlreadyAssignedError
  """
  from __future__ import absolute_import
  
  from sunpy.database.database import Database, EntryAlreadyAddedError,\
      EntryAlreadyStarredError, EntryAlreadyUnstarredError, NoSuchTagError,\
      EntryNotFoundError, TagAlreadyAssignedError
  from sunpy.database.commands import NoSuchEntryError
  
  __all__ = [
      'Database', 'EntryAlreadyAddedError', 'NoSuchEntryError', 'NoSuchTagError',
      'EntryAlreadyStarredError', 'EntryAlreadyUnstarredError',
      'EntryNotFoundError', 'TagAlreadyAssignedError', 'display_entries']
  
new_contents: """
  Overview
  --------
  The database package exports the following classes, functions and exceptions:
  
      :classes:
          - Database
      :functions:
          - display_entries
      :exceptions:
          - EntryAlreadyAddedError
          - NoSuchEntryError
          - EntryAlreadyStarredError
          - EntryAlreadyUnstarredError
          - EntryNotFoundError
          - TagAlreadyAssignedError
          - NoSuchTagError
  """
  from __future__ import absolute_import
  
  from sunpy.database.database import Database, EntryAlreadyAddedError,\
      EntryAlreadyStarredError, EntryAlreadyUnstarredError, NoSuchTagError,\
      EntryNotFoundError, TagAlreadyAssignedError
  from sunpy.database.commands import NoSuchEntryError
  
  __all__ = [
      'Database', 'EntryAlreadyAddedError', 'NoSuchEntryError', 'NoSuchTagError',
      'EntryAlreadyStarredError', 'EntryAlreadyUnstarredError',
      'EntryNotFoundError', 'TagAlreadyAssignedError', 'display_entries']
  
subject: add NoSuchTagError to the list of exceptions in the package doc