parameters: (self)
docstring: Begin quota transaction.
docstring_summary: Begin quota transaction.
docstring_tokens: Begin quota transaction .
function: def begin_transaction(self):
      """Begin quota transaction."""
      assert not self.in_transaction()
      self.__transaction.changes = {}
      self.__transaction.time = int(time.time())
      self.__lock.acquire()
function_tokens: def begin_transaction ( self ) : assert not self . in_transaction ( ) self . __transaction . changes = { } self . __transaction . time = int ( time . time ( ) ) self . __lock . acquire ( )