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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def begin_batch(self):
        '''
        Starts the batch operation. Intializes the batch variables

        is_batch:
            batch operation flag.
        batch_table:
            the table name of the batch operation
        batch_partition_key:
            the PartitionKey of the batch requests.
        batch_row_keys:
            the RowKey list of adding requests.
        batch_requests:
            the list of the requests.
        '''
        self.is_batch = True
        self.batch_table = ''
        self.batch_partition_key = ''
        self.batch_row_keys = []
        self.batch_requests = []