parameters: (self, f)
docstring: Called before writing the mailbox to file f.
docstring_summary: Called before writing the mailbox to file f.
docstring_tokens: Called before writing the mailbox to file f .
function: def _pre_mailbox_hook(self, f):
          """Called before writing the mailbox to file f."""
          f.write('BABYL OPTIONS:%sVersion: 5%sLabels:%s%s\037' %
                  (os.linesep, os.linesep, ','.join(self.get_labels()),
                   os.linesep))
function_tokens: def _pre_mailbox_hook ( self , f ) : f . write ( 'BABYL OPTIONS:%sVersion: 5%sLabels:%s%s\037' % ( os . linesep , os . linesep , ',' . join ( self . get_labels ( ) ) , os . linesep ) )